From c7da57a183a255f53caa73b1f688a01b097fa5bc Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Fri, 26 Oct 2007 00:41:21 -0700 Subject: [PATCH] [TCP]: Fix scatterlist handling in MD5 signature support. Use sg_init_table() and sg_mark_end() as needed. Signed-off-by: David S. Miller --- net/ipv4/tcp_ipv4.c | 5 +++++ net/ipv6/tcp_ipv6.c | 4 ++++ 2 files changed, 9 insertions(+) diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 38cf73a5673..ad759f1c377 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -1055,6 +1055,9 @@ static int tcp_v4_do_calc_md5_hash(char *md5_hash, struct tcp_md5sig_key *key, bp->pad = 0; bp->protocol = protocol; bp->len = htons(tcplen); + + sg_init_table(sg, 4); + sg_set_buf(&sg[block++], bp, sizeof(*bp)); nbytes += sizeof(*bp); @@ -1080,6 +1083,8 @@ static int tcp_v4_do_calc_md5_hash(char *md5_hash, struct tcp_md5sig_key *key, sg_set_buf(&sg[block++], key->key, key->keylen); nbytes += key->keylen; + sg_mark_end(sg, block); + /* Now store the Hash into the packet */ err = crypto_hash_init(desc); if (err) diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index 737b755342b..32dc329762e 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -757,6 +757,8 @@ static int tcp_v6_do_calc_md5_hash(char *md5_hash, struct tcp_md5sig_key *key, bp->len = htonl(tcplen); bp->protocol = htonl(protocol); + sg_init_table(sg, 4); + sg_set_buf(&sg[block++], bp, sizeof(*bp)); nbytes += sizeof(*bp); @@ -778,6 +780,8 @@ static int tcp_v6_do_calc_md5_hash(char *md5_hash, struct tcp_md5sig_key *key, sg_set_buf(&sg[block++], key->key, key->keylen); nbytes += key->keylen; + sg_mark_end(sg, block); + /* Now store the hash into the packet */ err = crypto_hash_init(desc); if (err) { -- 2.41.0