From c7da57a183a255f53caa73b1f688a01b097fa5bc Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@sunset.davemloft.net>
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 <davem@davemloft.net>
---
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 38cf73a567314..ad759f1c37773 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 737b755342bd8..32dc329762e95 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) {
--
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