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nfp: flower: add helper functions for tunnel classification 

Adds IPv4 address and TTL/TOS helper functions, which is done in
preparation for compiling new tunnel types.

Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: John Hurley <john.hurley@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pieter Jansen van Vuuren 2019-06-27 16:12:40 -07:00 committed by David S. Miller
parent 986643de53
commit 4bf8758a89
2 changed files with 51 additions and 24 deletions
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16
drivers/net/ethernet/netronome/nfp/flower/cmsg.h
View File

@ -354,6 +354,16 @@ struct nfp_flower_ipv6 {
struct in6_addr ipv6_dst;
};
struct nfp_flower_tun_ipv4 {
__be32 src;
__be32 dst;
};
struct nfp_flower_tun_ip_ext {
u8 tos;
u8 ttl;
};
/* Flow Frame IPv4 UDP TUNNEL --> Tunnel details (4W/16B)
* -----------------------------------------------------------------
* 3 2 1
@ -371,11 +381,9 @@ struct nfp_flower_ipv6 {
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
struct nfp_flower_ipv4_udp_tun {
__be32 ip_src;
__be32 ip_dst;
struct nfp_flower_tun_ipv4 ipv4;
__be16 reserved1;
u8 tos;
u8 ttl;
struct nfp_flower_tun_ip_ext ip_ext;
__be32 reserved2;
__be32 tun_id;
};

59
drivers/net/ethernet/netronome/nfp/flower/match.c
View File

@ -280,6 +280,42 @@ nfp_flower_compile_geneve_opt(void *ext, void *msk,
return 0;
}
static void
nfp_flower_compile_tun_ipv4_addrs(struct nfp_flower_tun_ipv4 *ext,
struct nfp_flower_tun_ipv4 *msk,
struct tc_cls_flower_offload *flow)
{
struct flow_rule *rule = tc_cls_flower_offload_flow_rule(flow);
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS)) {
struct flow_match_ipv4_addrs match;
flow_rule_match_enc_ipv4_addrs(rule, &match);
ext->src = match.key->src;
ext->dst = match.key->dst;
msk->src = match.mask->src;
msk->dst = match.mask->dst;
}
}
static void
nfp_flower_compile_tun_ip_ext(struct nfp_flower_tun_ip_ext *ext,
struct nfp_flower_tun_ip_ext *msk,
struct tc_cls_flower_offload *flow)
{
struct flow_rule *rule = tc_cls_flower_offload_flow_rule(flow);
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_IP)) {
struct flow_match_ip match;
flow_rule_match_enc_ip(rule, &match);
ext->tos = match.key->tos;
ext->ttl = match.key->ttl;
msk->tos = match.mask->tos;
msk->ttl = match.mask->ttl;
}
}
static void
nfp_flower_compile_ipv4_udp_tun(struct nfp_flower_ipv4_udp_tun *ext,
struct nfp_flower_ipv4_udp_tun *msk,
@ -301,25 +337,8 @@ nfp_flower_compile_ipv4_udp_tun(struct nfp_flower_ipv4_udp_tun *ext,
msk->tun_id = cpu_to_be32(temp_vni);
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS)) {
struct flow_match_ipv4_addrs match;
flow_rule_match_enc_ipv4_addrs(rule, &match);
ext->ip_src = match.key->src;
ext->ip_dst = match.key->dst;
msk->ip_src = match.mask->src;
msk->ip_dst = match.mask->dst;
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_IP)) {
struct flow_match_ip match;
flow_rule_match_enc_ip(rule, &match);
ext->tos = match.key->tos;
ext->ttl = match.key->ttl;
msk->tos = match.mask->tos;
msk->ttl = match.mask->ttl;
}
nfp_flower_compile_tun_ipv4_addrs(&ext->ipv4, &msk->ipv4, flow);
nfp_flower_compile_tun_ip_ext(&ext->ip_ext, &msk->ip_ext, flow);
}
int nfp_flower_compile_flow_match(struct nfp_app *app,
@ -411,7 +430,7 @@ int nfp_flower_compile_flow_match(struct nfp_app *app,
__be32 tun_dst;
nfp_flower_compile_ipv4_udp_tun((void *)ext, (void *)msk, flow);
tun_dst = ((struct nfp_flower_ipv4_udp_tun *)ext)->ip_dst;
tun_dst = ((struct nfp_flower_ipv4_udp_tun *)ext)->ipv4.dst;
ext += sizeof(struct nfp_flower_ipv4_udp_tun);
msk += sizeof(struct nfp_flower_ipv4_udp_tun);