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nfp: flower: move udp tunnel key match compilation to helper function 

IPv4 UDP and GRE tunnel match rule compile helpers share functions for
compiling fields such as IP addresses. However, they handle fields such
tunnel IDs differently.

Create new helper functions for compiling GRE and UDP tunnel key data.
This is in preparation for supporting IPv6 tunnels where these new
functions can be reused.

This patch does not change functionality.

Signed-off-by: John Hurley <john.hurley@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
John Hurley 2019-12-17 21:57:17 +00:00 committed by David S. Miller
parent 31c491e56a
commit 77a5f73a8b
1 changed files with 35 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

57
drivers/net/ethernet/netronome/nfp/flower/match.c
View File

@ -297,6 +297,38 @@ nfp_flower_compile_tun_ip_ext(struct nfp_flower_tun_ip_ext *ext,
}
}
static void
nfp_flower_compile_tun_udp_key(__be32 *key, __be32 *key_msk,
struct flow_rule *rule)
{
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
struct flow_match_enc_keyid match;
u32 vni;
flow_rule_match_enc_keyid(rule, &match);
vni = be32_to_cpu(match.key->keyid) << NFP_FL_TUN_VNI_OFFSET;
*key = cpu_to_be32(vni);
vni = be32_to_cpu(match.mask->keyid) << NFP_FL_TUN_VNI_OFFSET;
*key_msk = cpu_to_be32(vni);
}
}
static void
nfp_flower_compile_tun_gre_key(__be32 *key, __be32 *key_msk, __be16 *flags,
__be16 *flags_msk, struct flow_rule *rule)
{
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
struct flow_match_enc_keyid match;
flow_rule_match_enc_keyid(rule, &match);
*key = match.key->keyid;
*key_msk = match.mask->keyid;
*flags = cpu_to_be16(NFP_FL_GRE_FLAG_KEY);
*flags_msk = cpu_to_be16(NFP_FL_GRE_FLAG_KEY);
}
}
static void
nfp_flower_compile_ipv4_gre_tun(struct nfp_flower_ipv4_gre_tun *ext,
struct nfp_flower_ipv4_gre_tun *msk,
@ -309,19 +341,10 @@ nfp_flower_compile_ipv4_gre_tun(struct nfp_flower_ipv4_gre_tun *ext,
ext->ethertype = cpu_to_be16(ETH_P_TEB);
msk->ethertype = cpu_to_be16(~0);
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
struct flow_match_enc_keyid match;
flow_rule_match_enc_keyid(rule, &match);
ext->tun_key = match.key->keyid;
msk->tun_key = match.mask->keyid;
ext->tun_flags = cpu_to_be16(NFP_FL_GRE_FLAG_KEY);
msk->tun_flags = cpu_to_be16(NFP_FL_GRE_FLAG_KEY);
}
nfp_flower_compile_tun_ipv4_addrs(&ext->ipv4, &msk->ipv4, rule);
nfp_flower_compile_tun_ip_ext(&ext->ip_ext, &msk->ip_ext, rule);
nfp_flower_compile_tun_gre_key(&ext->tun_key, &msk->tun_key,
&ext->tun_flags, &msk->tun_flags, rule);
}
static void
@ -332,19 +355,9 @@ nfp_flower_compile_ipv4_udp_tun(struct nfp_flower_ipv4_udp_tun *ext,
memset(ext, 0, sizeof(struct nfp_flower_ipv4_udp_tun));
memset(msk, 0, sizeof(struct nfp_flower_ipv4_udp_tun));
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
struct flow_match_enc_keyid match;
u32 temp_vni;
flow_rule_match_enc_keyid(rule, &match);
temp_vni = be32_to_cpu(match.key->keyid) << NFP_FL_TUN_VNI_OFFSET;
ext->tun_id = cpu_to_be32(temp_vni);
temp_vni = be32_to_cpu(match.mask->keyid) << NFP_FL_TUN_VNI_OFFSET;
msk->tun_id = cpu_to_be32(temp_vni);
}
nfp_flower_compile_tun_ipv4_addrs(&ext->ipv4, &msk->ipv4, rule);
nfp_flower_compile_tun_ip_ext(&ext->ip_ext, &msk->ip_ext, rule);
nfp_flower_compile_tun_udp_key(&ext->tun_id, &msk->tun_id, rule);
}
int nfp_flower_compile_flow_match(struct nfp_app *app,