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SCTP : Fix to process bundled ASCONF chunk correctly

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If ASCONF chunk is bundled with other chunks as the first chunk, when
process the ASCONF parameters, full packet data will be process as the
parameters of the ASCONF chunk, not only the real parameters. So if you
send a ASCONF chunk bundled with other chunks, you will get an unexpect
result.
This problem also exists when ASCONF-ACK chunk is bundled with other chunks.

This patch fix this problem.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
This commit is contained in:
Wei Yongjun 2007-10-15 11:51:03 +09:00 committed by Vlad Yasevich
parent 64b0812b6d
commit f3830ccc2e
1 changed files with 6 additions and 2 deletions
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8
net/sctp/sm_make_chunk.c
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@ -2848,10 +2848,11 @@ struct sctp_chunk *sctp_process_asconf(struct sctp_association *asoc,
__be16 err_code;
int length = 0;
int chunk_len = asconf->skb->len;
int chunk_len;
__u32 serial;
int all_param_pass = 1;
chunk_len = ntohs(asconf->chunk_hdr->length) - sizeof(sctp_chunkhdr_t);
hdr = (sctp_addiphdr_t *)asconf->skb->data;
serial = ntohl(hdr->serial);
@ -2990,7 +2991,7 @@ static __be16 sctp_get_asconf_response(struct sctp_chunk *asconf_ack,
sctp_addip_param_t *asconf_ack_param;
sctp_errhdr_t *err_param;
int length;
int asconf_ack_len = asconf_ack->skb->len;
int asconf_ack_len;
__be16 err_code;
if (no_err)
@ -2998,6 +2999,9 @@ static __be16 sctp_get_asconf_response(struct sctp_chunk *asconf_ack,
else
err_code = SCTP_ERROR_REQ_REFUSED;
asconf_ack_len = ntohs(asconf_ack->chunk_hdr->length) -
sizeof(sctp_chunkhdr_t);
/* Skip the addiphdr from the asconf_ack chunk and store a pointer to
* the first asconf_ack parameter.
*/