diff options
| author | Xin Long <lucien.xin@gmail.com> | 2023-02-07 17:52:09 -0500 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-02-10 16:23:03 -0800 |
| commit | 558d95e7e11cd9844806e804f4c1243f2c744b00 (patch) | |
| tree | 35ca3b9f4e515a64346d3334f0663aeaa5757178 | |
| parent | 1b83bf4489cbc47d88976291cc967a17adb8e118 (diff) | |
net: sched: move frag check and tc_skb_cb update out of handle_fragments
This patch has no functional changes and just moves frag check and
tc_skb_cb update out of handle_fragments, to make it easier to move
the duplicate code from handle_fragments() into nf_conntrack_ovs later.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Acked-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | net/sched/act_ct.c | 71 |
1 files changed, 39 insertions, 32 deletions
diff --git a/net/sched/act_ct.c b/net/sched/act_ct.c index 0a1ecc972a8b..9f133ed93815 100644 --- a/net/sched/act_ct.c +++ b/net/sched/act_ct.c @@ -778,29 +778,10 @@ static int tcf_ct_ipv6_is_fragment(struct sk_buff *skb, bool *frag) return 0; } -static int tcf_ct_handle_fragments(struct net *net, struct sk_buff *skb, - u8 family, u16 zone, bool *defrag) +static int handle_fragments(struct net *net, struct sk_buff *skb, + u16 zone, u8 family, u16 *mru) { - enum ip_conntrack_info ctinfo; - struct nf_conn *ct; - int err = 0; - bool frag; - u16 mru; - - /* Previously seen (loopback)? Ignore. */ - ct = nf_ct_get(skb, &ctinfo); - if ((ct && !nf_ct_is_template(ct)) || ctinfo == IP_CT_UNTRACKED) - return 0; - - if (family == NFPROTO_IPV4) - err = tcf_ct_ipv4_is_fragment(skb, &frag); - else - err = tcf_ct_ipv6_is_fragment(skb, &frag); - if (err || !frag) - return err; - - skb_get(skb); - mru = tc_skb_cb(skb)->mru; + int err; if (family == NFPROTO_IPV4) { enum ip_defrag_users user = IP_DEFRAG_CONNTRACK_IN + zone; @@ -812,10 +793,8 @@ static int tcf_ct_handle_fragments(struct net *net, struct sk_buff *skb, if (err && err != -EINPROGRESS) return err; - if (!err) { - *defrag = true; - mru = IPCB(skb)->frag_max_size; - } + if (!err) + *mru = IPCB(skb)->frag_max_size; } else { /* NFPROTO_IPV6 */ #if IS_ENABLED(CONFIG_NF_DEFRAG_IPV6) enum ip6_defrag_users user = IP6_DEFRAG_CONNTRACK_IN + zone; @@ -825,18 +804,14 @@ static int tcf_ct_handle_fragments(struct net *net, struct sk_buff *skb, if (err && err != -EINPROGRESS) goto out_free; - if (!err) { - *defrag = true; - mru = IP6CB(skb)->frag_max_size; - } + if (!err) + *mru = IP6CB(skb)->frag_max_size; #else err = -EOPNOTSUPP; goto out_free; #endif } - if (err != -EINPROGRESS) - tc_skb_cb(skb)->mru = mru; skb_clear_hash(skb); skb->ignore_df = 1; return err; @@ -846,6 +821,38 @@ out_free: return err; } +static int tcf_ct_handle_fragments(struct net *net, struct sk_buff *skb, + u8 family, u16 zone, bool *defrag) +{ + enum ip_conntrack_info ctinfo; + struct nf_conn *ct; + int err = 0; + bool frag; + u16 mru; + + /* Previously seen (loopback)? Ignore. */ + ct = nf_ct_get(skb, &ctinfo); + if ((ct && !nf_ct_is_template(ct)) || ctinfo == IP_CT_UNTRACKED) + return 0; + + if (family == NFPROTO_IPV4) + err = tcf_ct_ipv4_is_fragment(skb, &frag); + else + err = tcf_ct_ipv6_is_fragment(skb, &frag); + if (err || !frag) + return err; + + skb_get(skb); + err = handle_fragments(net, skb, zone, family, &mru); + if (err) + return err; + + *defrag = true; + tc_skb_cb(skb)->mru = mru; + + return 0; +} + static void tcf_ct_params_free(struct tcf_ct_params *params) { if (params->helper) { |