diff options
Diffstat (limited to 'net/dccp/options.c')
| -rw-r--r-- | net/dccp/options.c | 32 |
1 files changed, 22 insertions, 10 deletions
diff --git a/net/dccp/options.c b/net/dccp/options.c index 0c996d8c79a..bedb5daaa3c 100644 --- a/net/dccp/options.c +++ b/net/dccp/options.c @@ -537,6 +537,18 @@ static int dccp_insert_options_feat(struct sock *sk, struct sk_buff *skb) return 0; } +/* The length of all options needs to be a multiple of 4 (5.8) */ +static void dccp_insert_option_padding(struct sk_buff *skb) +{ + int padding = DCCP_SKB_CB(skb)->dccpd_opt_len % 4; + + if (padding != 0) { + padding = 4 - padding; + memset(skb_push(skb, padding), 0, padding); + DCCP_SKB_CB(skb)->dccpd_opt_len += padding; + } +} + int dccp_insert_options(struct sock *sk, struct sk_buff *skb) { struct dccp_sock *dp = dccp_sk(sk); @@ -580,18 +592,18 @@ int dccp_insert_options(struct sock *sk, struct sk_buff *skb) dccp_insert_option_timestamp_echo(dp, NULL, skb)) return -1; - /* XXX: insert other options when appropriate */ + dccp_insert_option_padding(skb); + return 0; +} - if (DCCP_SKB_CB(skb)->dccpd_opt_len != 0) { - /* The length of all options has to be a multiple of 4 */ - int padding = DCCP_SKB_CB(skb)->dccpd_opt_len % 4; +int dccp_insert_options_rsk(struct dccp_request_sock *dreq, struct sk_buff *skb) +{ + DCCP_SKB_CB(skb)->dccpd_opt_len = 0; - if (padding != 0) { - padding = 4 - padding; - memset(skb_push(skb, padding), 0, padding); - DCCP_SKB_CB(skb)->dccpd_opt_len += padding; - } - } + if (dreq->dreq_timestamp_echo != 0 && + dccp_insert_option_timestamp_echo(NULL, dreq, skb)) + return -1; + dccp_insert_option_padding(skb); return 0; } |