gianfar: Basic Support for programming hash rules
This patch provides basic hash rules programming via the ethtool interface. Signed-off-by: Sandeep Gopalpet <Sandeep.Kumar@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sandeep Gopalpet
David S. Miller
parent
46ceb60ca8
commit
7a8b3372e2
4 changed files with 404 additions and 0 deletions
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@ -431,6 +431,9 @@ static const struct net_device_ops gfar_netdev_ops = {
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#endif
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};
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unsigned int ftp_rqfpr[MAX_FILER_IDX + 1];
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unsigned int ftp_rqfcr[MAX_FILER_IDX + 1];
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void lock_rx_qs(struct gfar_private *priv)
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{
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int i = 0x0;
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@ -766,6 +769,73 @@ static unsigned int reverse_bitmap(unsigned int bit_map, unsigned int max_qs)
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}
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return new_bit_map;
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}
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u32 cluster_entry_per_class(struct gfar_private *priv, u32 rqfar, u32 class)
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{
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u32 rqfpr = FPR_FILER_MASK;
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u32 rqfcr = 0x0;
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rqfar--;
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rqfcr = RQFCR_CLE | RQFCR_PID_MASK | RQFCR_CMP_EXACT;
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ftp_rqfpr[rqfar] = rqfpr;
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ftp_rqfcr[rqfar] = rqfcr;
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gfar_write_filer(priv, rqfar, rqfcr, rqfpr);
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rqfar--;
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rqfcr = RQFCR_CMP_NOMATCH;
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ftp_rqfpr[rqfar] = rqfpr;
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ftp_rqfcr[rqfar] = rqfcr;
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gfar_write_filer(priv, rqfar, rqfcr, rqfpr);
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rqfar--;
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rqfcr = RQFCR_CMP_EXACT | RQFCR_PID_PARSE | RQFCR_CLE | RQFCR_AND;
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rqfpr = class;
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ftp_rqfcr[rqfar] = rqfcr;
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ftp_rqfpr[rqfar] = rqfpr;
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gfar_write_filer(priv, rqfar, rqfcr, rqfpr);
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rqfar--;
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rqfcr = RQFCR_CMP_EXACT | RQFCR_PID_MASK | RQFCR_AND;
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rqfpr = class;
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ftp_rqfcr[rqfar] = rqfcr;
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ftp_rqfpr[rqfar] = rqfpr;
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gfar_write_filer(priv, rqfar, rqfcr, rqfpr);
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return rqfar;
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}
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static void gfar_init_filer_table(struct gfar_private *priv)
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{
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int i = 0x0;
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u32 rqfar = MAX_FILER_IDX;
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u32 rqfcr = 0x0;
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u32 rqfpr = FPR_FILER_MASK;
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/* Default rule */
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rqfcr = RQFCR_CMP_MATCH;
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ftp_rqfcr[rqfar] = rqfcr;
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ftp_rqfpr[rqfar] = rqfpr;
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gfar_write_filer(priv, rqfar, rqfcr, rqfpr);
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rqfar = cluster_entry_per_class(priv, rqfar, RQFPR_IPV6);
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rqfar = cluster_entry_per_class(priv, rqfar, RQFPR_IPV6 | RQFPR_UDP);
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rqfar = cluster_entry_per_class(priv, rqfar, RQFPR_IPV6 | RQFPR_TCP);
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rqfar = cluster_entry_per_class(priv, rqfar, RQFPR_IPV4);
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rqfar = cluster_entry_per_class(priv, rqfar, RQFPR_IPV4 | RQFPR_UDP);
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rqfar = cluster_entry_per_class(priv, rqfar, RQFPR_IPV4 | RQFPR_TCP);
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/* cur_filer_idx indicated the fisrt non-masked rule */
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priv->cur_filer_idx = rqfar;
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/* Rest are masked rules */
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rqfcr = RQFCR_CMP_NOMATCH;
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for (i = 0; i < rqfar; i++) {
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ftp_rqfcr[i] = rqfcr;
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ftp_rqfpr[i] = rqfpr;
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gfar_write_filer(priv, i, rqfcr, rqfpr);
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}
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}
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/* Set up the ethernet device structure, private data,
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* and anything else we need before we start */
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static int gfar_probe(struct of_device *ofdev,
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@ -1005,6 +1075,9 @@ static int gfar_probe(struct of_device *ofdev,
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priv->gfargrp[i].int_name_tx[len_devname] = '\0';
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}
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/* Initialize the filer table */
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gfar_init_filer_table(priv);
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/* Create all the sysfs files */
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gfar_init_sysfs(dev);
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@ -381,6 +381,84 @@ extern const char gfar_driver_version[];
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#define BD_LFLAG(flags) ((flags) << 16)
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#define BD_LENGTH_MASK 0x0000ffff
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#define CLASS_CODE_UNRECOG 0x00
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#define CLASS_CODE_DUMMY1 0x01
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#define CLASS_CODE_ETHERTYPE1 0x02
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#define CLASS_CODE_ETHERTYPE2 0x03
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#define CLASS_CODE_USER_PROG1 0x04
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#define CLASS_CODE_USER_PROG2 0x05
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#define CLASS_CODE_USER_PROG3 0x06
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#define CLASS_CODE_USER_PROG4 0x07
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#define CLASS_CODE_TCP_IPV4 0x08
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#define CLASS_CODE_UDP_IPV4 0x09
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#define CLASS_CODE_AH_ESP_IPV4 0x0a
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#define CLASS_CODE_SCTP_IPV4 0x0b
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#define CLASS_CODE_TCP_IPV6 0x0c
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#define CLASS_CODE_UDP_IPV6 0x0d
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#define CLASS_CODE_AH_ESP_IPV6 0x0e
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#define CLASS_CODE_SCTP_IPV6 0x0f
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#define FPR_FILER_MASK 0xFFFFFFFF
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#define MAX_FILER_IDX 0xFF
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/* RQFCR register bits */
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#define RQFCR_GPI 0x80000000
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#define RQFCR_HASHTBL_Q 0x00000000
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#define RQFCR_HASHTBL_0 0x00020000
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#define RQFCR_HASHTBL_1 0x00040000
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#define RQFCR_HASHTBL_2 0x00060000
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#define RQFCR_HASHTBL_3 0x00080000
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#define RQFCR_HASH 0x00010000
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#define RQFCR_CLE 0x00000200
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#define RQFCR_RJE 0x00000100
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#define RQFCR_AND 0x00000080
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#define RQFCR_CMP_EXACT 0x00000000
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#define RQFCR_CMP_MATCH 0x00000020
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#define RQFCR_CMP_NOEXACT 0x00000040
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#define RQFCR_CMP_NOMATCH 0x00000060
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/* RQFCR PID values */
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#define RQFCR_PID_MASK 0x00000000
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#define RQFCR_PID_PARSE 0x00000001
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#define RQFCR_PID_ARB 0x00000002
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#define RQFCR_PID_DAH 0x00000003
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#define RQFCR_PID_DAL 0x00000004
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#define RQFCR_PID_SAH 0x00000005
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#define RQFCR_PID_SAL 0x00000006
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#define RQFCR_PID_ETY 0x00000007
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#define RQFCR_PID_VID 0x00000008
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#define RQFCR_PID_PRI 0x00000009
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#define RQFCR_PID_TOS 0x0000000A
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#define RQFCR_PID_L4P 0x0000000B
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#define RQFCR_PID_DIA 0x0000000C
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#define RQFCR_PID_SIA 0x0000000D
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#define RQFCR_PID_DPT 0x0000000E
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#define RQFCR_PID_SPT 0x0000000F
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/* RQFPR when PID is 0x0001 */
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#define RQFPR_HDR_GE_512 0x00200000
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#define RQFPR_LERR 0x00100000
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#define RQFPR_RAR 0x00080000
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#define RQFPR_RARQ 0x00040000
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#define RQFPR_AR 0x00020000
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#define RQFPR_ARQ 0x00010000
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#define RQFPR_EBC 0x00008000
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#define RQFPR_VLN 0x00004000
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#define RQFPR_CFI 0x00002000
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#define RQFPR_JUM 0x00001000
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#define RQFPR_IPF 0x00000800
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#define RQFPR_FIF 0x00000400
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#define RQFPR_IPV4 0x00000200
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#define RQFPR_IPV6 0x00000100
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#define RQFPR_ICC 0x00000080
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#define RQFPR_ICV 0x00000040
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#define RQFPR_TCP 0x00000020
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#define RQFPR_UDP 0x00000010
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#define RQFPR_TUC 0x00000008
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#define RQFPR_TUV 0x00000004
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#define RQFPR_PER 0x00000002
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#define RQFPR_EER 0x00000001
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/* TxBD status field bits */
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#define TXBD_READY 0x8000
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#define TXBD_PADCRC 0x4000
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@ -959,6 +1037,8 @@ struct gfar_private {
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unsigned int rx_stash_size;
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unsigned int rx_stash_index;
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u32 cur_filer_idx;
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struct sk_buff_head rx_recycle;
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struct vlan_group *vlgrp;
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@ -1002,6 +1082,9 @@ struct gfar_private {
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struct gfar_extra_stats extra_stats;
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};
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extern unsigned int ftp_rqfpr[MAX_FILER_IDX + 1];
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extern unsigned int ftp_rqfcr[MAX_FILER_IDX + 1];
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static inline u32 gfar_read(volatile unsigned __iomem *addr)
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{
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u32 val;
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@ -1014,6 +1097,16 @@ static inline void gfar_write(volatile unsigned __iomem *addr, u32 val)
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out_be32(addr, val);
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}
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static inline void gfar_write_filer(struct gfar_private *priv,
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unsigned int far, unsigned int fcr, unsigned int fpr)
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{
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struct gfar __iomem *regs = priv->gfargrp[0].regs;
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gfar_write(®s->rqfar, far);
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gfar_write(®s->rqfcr, fcr);
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gfar_write(®s->rqfpr, fpr);
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}
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extern void lock_rx_qs(struct gfar_private *priv);
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extern void lock_tx_qs(struct gfar_private *priv);
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extern void unlock_rx_qs(struct gfar_private *priv);
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@ -645,6 +645,241 @@ static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
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}
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#endif
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static int gfar_ethflow_to_class(int flow_type, u64 *class)
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{
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switch (flow_type) {
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case TCP_V4_FLOW:
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*class = CLASS_CODE_TCP_IPV4;
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break;
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case UDP_V4_FLOW:
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*class = CLASS_CODE_UDP_IPV4;
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break;
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case AH_V4_FLOW:
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case ESP_V4_FLOW:
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*class = CLASS_CODE_AH_ESP_IPV4;
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break;
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case SCTP_V4_FLOW:
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*class = CLASS_CODE_SCTP_IPV4;
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break;
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case TCP_V6_FLOW:
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*class = CLASS_CODE_TCP_IPV6;
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break;
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case UDP_V6_FLOW:
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*class = CLASS_CODE_UDP_IPV6;
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break;
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case AH_V6_FLOW:
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case ESP_V6_FLOW:
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*class = CLASS_CODE_AH_ESP_IPV6;
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break;
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case SCTP_V6_FLOW:
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*class = CLASS_CODE_SCTP_IPV6;
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break;
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default:
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return 0;
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}
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return 1;
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}
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static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow)
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{
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u32 fcr = 0x0, fpr = FPR_FILER_MASK;
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if (ethflow & RXH_L2DA) {
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fcr = RQFCR_PID_DAH |RQFCR_CMP_NOMATCH |
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RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
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ftp_rqfpr[priv->cur_filer_idx] = fpr;
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ftp_rqfcr[priv->cur_filer_idx] = fcr;
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gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
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priv->cur_filer_idx = priv->cur_filer_idx - 1;
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fcr = RQFCR_PID_DAL | RQFCR_AND | RQFCR_CMP_NOMATCH |
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RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
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ftp_rqfpr[priv->cur_filer_idx] = fpr;
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ftp_rqfcr[priv->cur_filer_idx] = fcr;
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gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
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priv->cur_filer_idx = priv->cur_filer_idx - 1;
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}
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if (ethflow & RXH_VLAN) {
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fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH |
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RQFCR_AND | RQFCR_HASHTBL_0;
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gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
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ftp_rqfpr[priv->cur_filer_idx] = fpr;
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ftp_rqfcr[priv->cur_filer_idx] = fcr;
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priv->cur_filer_idx = priv->cur_filer_idx - 1;
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}
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if (ethflow & RXH_IP_SRC) {
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fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
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RQFCR_AND | RQFCR_HASHTBL_0;
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ftp_rqfpr[priv->cur_filer_idx] = fpr;
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ftp_rqfcr[priv->cur_filer_idx] = fcr;
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gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
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priv->cur_filer_idx = priv->cur_filer_idx - 1;
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}
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if (ethflow & (RXH_IP_DST)) {
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fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
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RQFCR_AND | RQFCR_HASHTBL_0;
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ftp_rqfpr[priv->cur_filer_idx] = fpr;
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ftp_rqfcr[priv->cur_filer_idx] = fcr;
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gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
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priv->cur_filer_idx = priv->cur_filer_idx - 1;
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}
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if (ethflow & RXH_L3_PROTO) {
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fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH |
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RQFCR_AND | RQFCR_HASHTBL_0;
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ftp_rqfpr[priv->cur_filer_idx] = fpr;
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ftp_rqfcr[priv->cur_filer_idx] = fcr;
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gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
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priv->cur_filer_idx = priv->cur_filer_idx - 1;
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}
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if (ethflow & RXH_L4_B_0_1) {
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fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
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RQFCR_AND | RQFCR_HASHTBL_0;
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ftp_rqfpr[priv->cur_filer_idx] = fpr;
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ftp_rqfcr[priv->cur_filer_idx] = fcr;
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gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
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priv->cur_filer_idx = priv->cur_filer_idx - 1;
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}
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if (ethflow & RXH_L4_B_2_3) {
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fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
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RQFCR_AND | RQFCR_HASHTBL_0;
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ftp_rqfpr[priv->cur_filer_idx] = fpr;
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ftp_rqfcr[priv->cur_filer_idx] = fcr;
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gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
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priv->cur_filer_idx = priv->cur_filer_idx - 1;
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}
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}
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static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow, u64 class)
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{
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unsigned int last_rule_idx = priv->cur_filer_idx;
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unsigned int cmp_rqfpr;
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unsigned int local_rqfpr[MAX_FILER_IDX + 1];
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unsigned int local_rqfcr[MAX_FILER_IDX + 1];
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int i = 0x0, k = 0x0;
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int j = MAX_FILER_IDX, l = 0x0;
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switch (class) {
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case TCP_V4_FLOW:
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cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP;
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break;
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case UDP_V4_FLOW:
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cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP;
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break;
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case TCP_V6_FLOW:
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cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP;
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break;
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case UDP_V6_FLOW:
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cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP;
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break;
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case IPV4_FLOW:
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cmp_rqfpr = RQFPR_IPV4;
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case IPV6_FLOW:
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cmp_rqfpr = RQFPR_IPV6;
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break;
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default:
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printk(KERN_ERR "Right now this class is not supported\n");
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return 0;
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}
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for (i = 0; i < MAX_FILER_IDX + 1; i++) {
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local_rqfpr[j] = ftp_rqfpr[i];
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local_rqfcr[j] = ftp_rqfcr[i];
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j--;
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if ((ftp_rqfcr[i] == (RQFCR_PID_PARSE |
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RQFCR_CLE |RQFCR_AND)) &&
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(ftp_rqfpr[i] == cmp_rqfpr))
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break;
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}
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if (i == MAX_FILER_IDX + 1) {
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printk(KERN_ERR "No parse rule found, ");
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printk(KERN_ERR "can't create hash rules\n");
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return 0;
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}
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/* If a match was found, then it begins the starting of a cluster rule
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* if it was already programmed, we need to overwrite these rules
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*/
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for (l = i+1; l < MAX_FILER_IDX; l++) {
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if ((ftp_rqfcr[l] & RQFCR_CLE) &&
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!(ftp_rqfcr[l] & RQFCR_AND)) {
|
||||
ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT |
|
||||
RQFCR_HASHTBL_0 | RQFCR_PID_MASK;
|
||||
ftp_rqfpr[l] = FPR_FILER_MASK;
|
||||
gfar_write_filer(priv, l, ftp_rqfcr[l], ftp_rqfpr[l]);
|
||||
break;
|
||||
}
|
||||
|
||||
if (!(ftp_rqfcr[l] & RQFCR_CLE) && (ftp_rqfcr[l] & RQFCR_AND))
|
||||
continue;
|
||||
else {
|
||||
local_rqfpr[j] = ftp_rqfpr[l];
|
||||
local_rqfcr[j] = ftp_rqfcr[l];
|
||||
j--;
|
||||
}
|
||||
}
|
||||
|
||||
priv->cur_filer_idx = l - 1;
|
||||
last_rule_idx = l;
|
||||
|
||||
/* hash rules */
|
||||
ethflow_to_filer_rules(priv, ethflow);
|
||||
|
||||
/* Write back the popped out rules again */
|
||||
for (k = j+1; k < MAX_FILER_IDX; k++) {
|
||||
ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k];
|
||||
ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k];
|
||||
gfar_write_filer(priv, priv->cur_filer_idx,
|
||||
local_rqfcr[k], local_rqfpr[k]);
|
||||
if (!priv->cur_filer_idx)
|
||||
break;
|
||||
priv->cur_filer_idx = priv->cur_filer_idx - 1;
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int gfar_set_hash_opts(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
|
||||
{
|
||||
u64 class;
|
||||
|
||||
if (!gfar_ethflow_to_class(cmd->flow_type, &class))
|
||||
return -EINVAL;
|
||||
|
||||
if (class < CLASS_CODE_USER_PROG1 ||
|
||||
class > CLASS_CODE_SCTP_IPV6)
|
||||
return -EINVAL;
|
||||
|
||||
/* write the filer rules here */
|
||||
if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type))
|
||||
return -1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
|
||||
{
|
||||
struct gfar_private *priv = netdev_priv(dev);
|
||||
int ret = 0;
|
||||
|
||||
switch(cmd->cmd) {
|
||||
case ETHTOOL_SRXFH:
|
||||
ret = gfar_set_hash_opts(priv, cmd);
|
||||
break;
|
||||
default:
|
||||
ret = -EINVAL;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
const struct ethtool_ops gfar_ethtool_ops = {
|
||||
.get_settings = gfar_gsettings,
|
||||
.set_settings = gfar_ssettings,
|
||||
|
|
@ -670,4 +905,5 @@ const struct ethtool_ops gfar_ethtool_ops = {
|
|||
.get_wol = gfar_get_wol,
|
||||
.set_wol = gfar_set_wol,
|
||||
#endif
|
||||
.set_rxnfc = gfar_set_nfc,
|
||||
};
|
||||
|
|
|
|||
|
|
@ -674,6 +674,8 @@ struct ethtool_ops {
|
|||
#define AH_V6_FLOW 0x0b
|
||||
#define ESP_V6_FLOW 0x0c
|
||||
#define IP_USER_FLOW 0x0d
|
||||
#define IPV4_FLOW 0x10
|
||||
#define IPV6_FLOW 0x11
|
||||
|
||||
/* L3-L4 network traffic flow hash options */
|
||||
#define RXH_L2DA (1 << 1)
|
||||
|
|
|
|||
Loading…
Reference in a new issue