mir/openvswitch
2
0
Fork 0
mirror of https://github.com/openvswitch/ovs synced 2025-10-25 15:07:05 +00:00
Code Issues Releases Wiki Activity

Support matching and modifying IP TTL.

Browse Source 
Add support matching the IPv4 TTL and IPv6 hop limit fields.  This
commit also adds support for modifying the IPv4 TTL.  Modifying the IPv6
hop limit isn't currently supported, since we don't support modifying
IPv6 headers.

We will likely want to change the user-space interface, since basic
matching and setting the TTL are not generally useful.  We will probably
want the ability to match on extraordinary events (such as TTL of 0 or 1)
and a decrement action.

Feature #8024

Signed-off-by: Justin Pettit <jpettit@nicira.com>
Acked-by: Jesse Gross <jesse@nicira.com>
This commit is contained in:
Justin Pettit
2011-11-05 15:48:12 -07:00
parent 530180fd5a
commit a61680c6d1
26 changed files with 208 additions and 72 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
lib/meta-flow.c
View File

@@ -201,6 +201,13 @@ static const struct mf_field mf_fields[MFF_N_IDS] = {
MFS_DECIMAL,
MFP_IP_ANY,
NXM_NX_IP_ECN,
}, {
MFF_IP_TTL, "nw_ttl", NULL,
MF_FIELD_SIZES(u8),
MFM_NONE, FWW_NW_TTL,
MFS_DECIMAL,
MFP_IP_ANY,
NXM_NX_IP_TTL,
}, {
MFF_IP_FRAG, "ip_frag", NULL,
1, 2,
@@ -369,6 +376,7 @@ mf_is_all_wild(const struct mf_field *mf, const struct flow_wildcards *wc)
case MFF_ETH_SRC:
case MFF_ETH_TYPE:
case MFF_IP_PROTO:
case MFF_IP_TTL:
case MFF_IPV6_LABEL:
case MFF_ARP_OP:
case MFF_ARP_SHA:
@@ -462,6 +470,7 @@ mf_get_mask(const struct mf_field *mf, const struct flow_wildcards *wc,
case MFF_ETH_SRC:
case MFF_ETH_TYPE:
case MFF_IP_PROTO:
case MFF_IP_TTL:
case MFF_IPV6_LABEL:
case MFF_ARP_OP:
case MFF_ARP_SHA:
@@ -689,6 +698,7 @@ mf_is_value_valid(const struct mf_field *mf, const union mf_value *value)
case MFF_IPV6_SRC:
case MFF_IPV6_DST:
case MFF_IP_PROTO:
case MFF_IP_TTL:
case MFF_ARP_SPA:
case MFF_ARP_TPA:
case MFF_ARP_SHA:
@@ -821,6 +831,10 @@ mf_get_value(const struct mf_field *mf, const struct flow *flow,
value->u8 = flow->tos & IP_ECN_MASK;
break;
case MFF_IP_TTL:
value->u8 = flow->nw_ttl;
break;
case MFF_IP_FRAG:
value->u8 = flow->frag;
break;
@@ -976,6 +990,10 @@ mf_set_value(const struct mf_field *mf,
cls_rule_set_nw_ecn(rule, value->u8);
break;
case MFF_IP_TTL:
cls_rule_set_nw_ttl(rule, value->u8);
break;
case MFF_IP_FRAG:
cls_rule_set_frag(rule, value->u8);
break;
@@ -1149,6 +1167,11 @@ mf_set_wild(const struct mf_field *mf, struct cls_rule *rule)
rule->flow.tos &= ~IP_ECN_MASK;
break;
case MFF_IP_TTL:
rule->wc.wildcards |= FWW_NW_TTL;
rule->flow.nw_ttl = 0;
break;
case MFF_IP_FRAG:
rule->wc.frag_mask |= FLOW_FRAG_MASK;
rule->flow.frag &= ~FLOW_FRAG_MASK;
@@ -1228,6 +1251,7 @@ mf_set(const struct mf_field *mf,
case MFF_VLAN_PCP:
case MFF_IPV6_LABEL:
case MFF_IP_PROTO:
case MFF_IP_TTL:
case MFF_IP_DSCP:
case MFF_IP_ECN:
case MFF_ARP_OP:
@@ -1433,6 +1457,7 @@ mf_random_value(const struct mf_field *mf, union mf_value *value)
case MFF_IPV6_SRC:
case MFF_IPV6_DST:
case MFF_IP_PROTO:
case MFF_IP_TTL:
case MFF_ARP_SPA:
case MFF_ARP_TPA:
case MFF_ARP_SHA: