RxRPC: Error handling for rxrpc_alloc_connection()

[safe/jmp/linux-2.6] / net / xfrm / xfrm_output.c

diff --git a/net/xfrm/xfrm_output.c b/net/xfrm/xfrm_output.c
index f4a1047..c235597 100644 (file)
--- a/net/xfrm/xfrm_output.c
+++ b/net/xfrm/xfrm_output.c
@@ -25,18 +25,23 @@ static int xfrm_state_check_space(struct xfrm_state *x, struct sk_buff *skb)
        struct dst_entry *dst = skb->dst;
        int nhead = dst->header_len + LL_RESERVED_SPACE(dst->dev)
                - skb_headroom(skb);
+       int ntail = dst->dev->needed_tailroom - skb_tailroom(skb);
 
-       if (nhead > 0)
-               return pskb_expand_head(skb, nhead, 0, GFP_ATOMIC);
+       if (nhead <= 0) {
+               if (ntail <= 0)
+                       return 0;
+               nhead = 0;
+       } else if (ntail < 0)
+               ntail = 0;
 
-       /* Check tail too... */
-       return 0;
+       return pskb_expand_head(skb, nhead, ntail, GFP_ATOMIC);
 }
 
 static int xfrm_output_one(struct sk_buff *skb, int err)
 {
        struct dst_entry *dst = skb->dst;
        struct xfrm_state *x = dst->xfrm;
+       struct net *net = xs_net(x);
 
        if (err <= 0)
                goto resume;
@@ -44,32 +49,33 @@ static int xfrm_output_one(struct sk_buff *skb, int err)
        do {
                err = xfrm_state_check_space(x, skb);
                if (err) {
-                       XFRM_INC_STATS(LINUX_MIB_XFRMOUTERROR);
+                       XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTERROR);
                        goto error_nolock;
                }
 
                err = x->outer_mode->output(x, skb);
                if (err) {
-                       XFRM_INC_STATS(LINUX_MIB_XFRMOUTSTATEMODEERROR);
+                       XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEMODEERROR);
                        goto error_nolock;
                }
 
                spin_lock_bh(&x->lock);
                err = xfrm_state_check_expire(x);
                if (err) {
-                       XFRM_INC_STATS(LINUX_MIB_XFRMOUTSTATEEXPIRED);
+                       XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEEXPIRED);
                        goto error;
                }
 
                if (x->type->flags & XFRM_TYPE_REPLAY_PROT) {
-                       XFRM_SKB_CB(skb)->seq = ++x->replay.oseq;
+                       XFRM_SKB_CB(skb)->seq.output = ++x->replay.oseq;
                        if (unlikely(x->replay.oseq == 0)) {
+                               XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATESEQERROR);
                                x->replay.oseq--;
                                xfrm_audit_state_replay_overflow(x, skb);
                                err = -EOVERFLOW;
                                goto error;
                        }
-                       if (xfrm_aevent_is_on())
+                       if (xfrm_aevent_is_on(net))
                                xfrm_replay_notify(x, XFRM_REPLAY_UPDATE);
                }
 
@@ -84,12 +90,12 @@ static int xfrm_output_one(struct sk_buff *skb, int err)
 
 resume:
                if (err) {
-                       XFRM_INC_STATS(LINUX_MIB_XFRMOUTSTATEPROTOERROR);
+                       XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEPROTOERROR);
                        goto error_nolock;
                }
 
                if (!(skb->dst = dst_pop(dst))) {
-                       XFRM_INC_STATS(LINUX_MIB_XFRMOUTERROR);
+                       XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTERROR);
                        err = -EHOSTUNREACH;
                        goto error_nolock;
                }
@@ -111,19 +117,16 @@ error_nolock:
 int xfrm_output_resume(struct sk_buff *skb, int err)
 {
        while (likely((err = xfrm_output_one(skb, err)) == 0)) {
-               struct xfrm_state *x;
-
                nf_reset(skb);
 
                err = skb->dst->ops->local_out(skb);
                if (unlikely(err != 1))
                        goto out;
 
-               x = skb->dst->xfrm;
-               if (!x)
+               if (!skb->dst->xfrm)
                        return dst_output(skb);
 
-               err = nf_hook(x->inner_mode->afinfo->family,
+               err = nf_hook(skb->dst->ops->family,
                              NF_INET_POST_ROUTING, skb,
                              NULL, skb->dst->dev, xfrm_output2);
                if (unlikely(err != 1))
@@ -149,7 +152,7 @@ static int xfrm_output_gso(struct sk_buff *skb)
 
        segs = skb_gso_segment(skb, 0);
        kfree_skb(skb);
-       if (unlikely(IS_ERR(segs)))
+       if (IS_ERR(segs))
                return PTR_ERR(segs);
 
        do {
@@ -176,6 +179,7 @@ static int xfrm_output_gso(struct sk_buff *skb)
 
 int xfrm_output(struct sk_buff *skb)
 {
+       struct net *net = dev_net(skb->dst->dev);
        int err;
 
        if (skb_is_gso(skb))
@@ -184,7 +188,7 @@ int xfrm_output(struct sk_buff *skb)
        if (skb->ip_summed == CHECKSUM_PARTIAL) {
                err = skb_checksum_help(skb);
                if (err) {
-                       XFRM_INC_STATS(LINUX_MIB_XFRMOUTERROR);
+                       XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTERROR);
                        kfree_skb(skb);
                        return err;
                }
@@ -192,4 +196,20 @@ int xfrm_output(struct sk_buff *skb)
 
        return xfrm_output2(skb);
 }
+
+int xfrm_inner_extract_output(struct xfrm_state *x, struct sk_buff *skb)
+{
+       struct xfrm_mode *inner_mode;
+       if (x->sel.family == AF_UNSPEC)
+               inner_mode = xfrm_ip2inner_mode(x,
+                               xfrm_af2proto(skb->dst->ops->family));
+       else
+               inner_mode = x->inner_mode;
+
+       if (inner_mode == NULL)
+               return -EAFNOSUPPORT;
+       return inner_mode->afinfo->extract_output(x, skb);
+}
+
 EXPORT_SYMBOL_GPL(xfrm_output);
+EXPORT_SYMBOL_GPL(xfrm_inner_extract_output);