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ieee802154: header_ops: fix frame control setting

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Sometimes upper-layer protocols wants to generate a new mac header by
filling "struct ieee802154_hdr" only. These upper-layers sets for the
address settings the source and dest fields, but not the fc fields for
indicate the source and dest address mode. This patch changes the
"ieee802154_hdr_push" function so the fc address fields are set
according the source and dest fields of "struct ieee802154_hdr".

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Alexander Aring 2015-09-18 11:30:41 +02:00 committed by Marcel Holtmann
parent cdd38b219e
commit a1da67b811
2 changed files with 10 additions and 10 deletions
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2
include/net/ieee802154_netdev.h
View file

@ -99,7 +99,7 @@ struct ieee802154_hdr {
* hdr->fc will be ignored. this includes the INTRA_PAN bit and the frame
* version, if SECEN is set.
*/
int ieee802154_hdr_push(struct sk_buff *skb, const struct ieee802154_hdr *hdr);
int ieee802154_hdr_push(struct sk_buff *skb, struct ieee802154_hdr *hdr);
/* pulls the entire 802.15.4 header off of the skb, including the security
* header, and performs pan id decompression

18
net/ieee802154/header_ops.c
View file

@ -83,35 +83,35 @@ ieee802154_hdr_push_sechdr(u8 *buf, const struct ieee802154_sechdr *hdr)
}
int
ieee802154_hdr_push(struct sk_buff *skb, const struct ieee802154_hdr *hdr)
ieee802154_hdr_push(struct sk_buff *skb, struct ieee802154_hdr *hdr)
{
u8 buf[MAC802154_FRAME_HARD_HEADER_LEN];
int pos = 2;
int rc;
struct ieee802154_hdr_fc fc = hdr->fc;
struct ieee802154_hdr_fc *fc = &hdr->fc;
buf[pos++] = hdr->seq;
fc.dest_addr_mode = hdr->dest.mode;
fc->dest_addr_mode = hdr->dest.mode;
rc = ieee802154_hdr_push_addr(buf + pos, &hdr->dest, false);
if (rc < 0)
return -EINVAL;
pos += rc;
fc.source_addr_mode = hdr->source.mode;
fc->source_addr_mode = hdr->source.mode;
if (hdr->source.pan_id == hdr->dest.pan_id &&
hdr->dest.mode != IEEE802154_ADDR_NONE)
fc.intra_pan = true;
fc->intra_pan = true;
rc = ieee802154_hdr_push_addr(buf + pos, &hdr->source, fc.intra_pan);
rc = ieee802154_hdr_push_addr(buf + pos, &hdr->source, fc->intra_pan);
if (rc < 0)
return -EINVAL;
pos += rc;
if (fc.security_enabled) {
fc.version = 1;
if (fc->security_enabled) {
fc->version = 1;
rc = ieee802154_hdr_push_sechdr(buf + pos, &hdr->sec);
if (rc < 0)
@ -120,7 +120,7 @@ ieee802154_hdr_push(struct sk_buff *skb, const struct ieee802154_hdr *hdr)
pos += rc;
}
memcpy(buf, &fc, 2);
memcpy(buf, fc, 2);
memcpy(skb_push(skb, pos), buf, pos);