From 1198ad002ad36291817c7bf0308ab9c50ee2571d Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Mon, 5 Sep 2005 18:44:37 -0700 Subject: [PATCH] [NET]: 2.6.13 breaks libpcap (and tcpdump) Patrick McHardy says: Never mind, I got it, we never fall through to the second switch statement anymore. I think we could simply break when load_pointer returns NULL. The switch statement will fall through to the default case and return 0 for all cases but 0 > k >= SKF_AD_OFF. Here's a patch to do just that. I left BPF_MSH alone because it's really a hack to calculate the IP header length, which makes no sense when applied to the special data. Signed-off-by: Herbert Xu Signed-off-by: David S. Miller --- net/core/filter.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/net/core/filter.c b/net/core/filter.c index cd91a24f9720..079c2edff789 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -182,7 +182,7 @@ int sk_run_filter(struct sk_buff *skb, struct sock_filter *filter, int flen) A = ntohl(*(u32 *)ptr); continue; } - return 0; + break; case BPF_LD|BPF_H|BPF_ABS: k = fentry->k; load_h: @@ -191,7 +191,7 @@ int sk_run_filter(struct sk_buff *skb, struct sock_filter *filter, int flen) A = ntohs(*(u16 *)ptr); continue; } - return 0; + break; case BPF_LD|BPF_B|BPF_ABS: k = fentry->k; load_b: @@ -200,7 +200,7 @@ load_b: A = *(u8 *)ptr; continue; } - return 0; + break; case BPF_LD|BPF_W|BPF_LEN: A = skb->len; continue; -- 2.30.2