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Commit a7ad40d0 authored by Edward Cree's avatar Edward Cree Committed by David S. Miller
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sfc: implement IPv6 NFC (and IPV4_USER_FLOW) 

Signed-off-by: default avatarEdward Cree <ecree@solarflare.com>
Reviewed-by: default avatarBen Hutchings <ben@decadent.org.uk>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 72bb6872
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Showing with 184 additions and 0 deletions
drivers/net/ethernet/sfc/ethtool.c
View file @ a7ad40d0
......@@ -783,14 +783,26 @@ static int efx_ethtool_reset(struct net_device *net_dev, u32 *flags)
static const u8 mac_addr_ig_mask[ETH_ALEN] __aligned(2) = {0x01, 0, 0, 0, 0, 0};
#define IP4_ADDR_FULL_MASK ((__force __be32)~0)
#define IP_PROTO_FULL_MASK 0xFF
#define PORT_FULL_MASK ((__force __be16)~0)
#define ETHER_TYPE_FULL_MASK ((__force __be16)~0)
static inline void ip6_fill_mask(__be32 *mask)
{
mask[0] = mask[1] = mask[2] = mask[3] = ~(__be32)0;
}
static int efx_ethtool_get_class_rule(struct efx_nic *efx,
struct ethtool_rx_flow_spec *rule)
{
struct ethtool_tcpip4_spec *ip_entry = &rule->h_u.tcp_ip4_spec;
struct ethtool_tcpip4_spec *ip_mask = &rule->m_u.tcp_ip4_spec;
struct ethtool_usrip4_spec *uip_entry = &rule->h_u.usr_ip4_spec;
struct ethtool_usrip4_spec *uip_mask = &rule->m_u.usr_ip4_spec;
struct ethtool_tcpip6_spec *ip6_entry = &rule->h_u.tcp_ip6_spec;
struct ethtool_tcpip6_spec *ip6_mask = &rule->m_u.tcp_ip6_spec;
struct ethtool_usrip6_spec *uip6_entry = &rule->h_u.usr_ip6_spec;
struct ethtool_usrip6_spec *uip6_mask = &rule->m_u.usr_ip6_spec;
struct ethhdr *mac_entry = &rule->h_u.ether_spec;
struct ethhdr *mac_mask = &rule->m_u.ether_spec;
struct efx_filter_spec spec;
......@@ -833,6 +845,35 @@ static int efx_ethtool_get_class_rule(struct efx_nic *efx,
ip_entry->psrc = spec.rem_port;
ip_mask->psrc = PORT_FULL_MASK;
}
} else if ((spec.match_flags & EFX_FILTER_MATCH_ETHER_TYPE) &&
spec.ether_type == htons(ETH_P_IPV6) &&
(spec.match_flags & EFX_FILTER_MATCH_IP_PROTO) &&
(spec.ip_proto == IPPROTO_TCP || spec.ip_proto == IPPROTO_UDP) &&
!(spec.match_flags &
~(EFX_FILTER_MATCH_ETHER_TYPE | EFX_FILTER_MATCH_OUTER_VID |
EFX_FILTER_MATCH_LOC_HOST | EFX_FILTER_MATCH_REM_HOST |
EFX_FILTER_MATCH_IP_PROTO |
EFX_FILTER_MATCH_LOC_PORT | EFX_FILTER_MATCH_REM_PORT))) {
rule->flow_type = ((spec.ip_proto == IPPROTO_TCP) ?
TCP_V6_FLOW : UDP_V6_FLOW);
if (spec.match_flags & EFX_FILTER_MATCH_LOC_HOST) {
memcpy(ip6_entry->ip6dst, spec.loc_host,
sizeof(ip6_entry->ip6dst));
ip6_fill_mask(ip6_mask->ip6dst);
}
if (spec.match_flags & EFX_FILTER_MATCH_REM_HOST) {
memcpy(ip6_entry->ip6src, spec.rem_host,
sizeof(ip6_entry->ip6src));
ip6_fill_mask(ip6_mask->ip6src);
}
if (spec.match_flags & EFX_FILTER_MATCH_LOC_PORT) {
ip6_entry->pdst = spec.loc_port;
ip6_mask->pdst = PORT_FULL_MASK;
}
if (spec.match_flags & EFX_FILTER_MATCH_REM_PORT) {
ip6_entry->psrc = spec.rem_port;
ip6_mask->psrc = PORT_FULL_MASK;
}
} else if (!(spec.match_flags &
~(EFX_FILTER_MATCH_LOC_MAC | EFX_FILTER_MATCH_LOC_MAC_IG |
EFX_FILTER_MATCH_REM_MAC | EFX_FILTER_MATCH_ETHER_TYPE |
......@@ -855,6 +896,47 @@ static int efx_ethtool_get_class_rule(struct efx_nic *efx,
mac_entry->h_proto = spec.ether_type;
mac_mask->h_proto = ETHER_TYPE_FULL_MASK;
}
} else if (spec.match_flags & EFX_FILTER_MATCH_ETHER_TYPE &&
spec.ether_type == htons(ETH_P_IP) &&
!(spec.match_flags &
~(EFX_FILTER_MATCH_ETHER_TYPE | EFX_FILTER_MATCH_OUTER_VID |
EFX_FILTER_MATCH_LOC_HOST | EFX_FILTER_MATCH_REM_HOST |
EFX_FILTER_MATCH_IP_PROTO))) {
rule->flow_type = IPV4_USER_FLOW;
uip_entry->ip_ver = ETH_RX_NFC_IP4;
if (spec.match_flags & EFX_FILTER_MATCH_IP_PROTO) {
uip_mask->proto = IP_PROTO_FULL_MASK;
uip_entry->proto = spec.ip_proto;
}
if (spec.match_flags & EFX_FILTER_MATCH_LOC_HOST) {
uip_entry->ip4dst = spec.loc_host[0];
uip_mask->ip4dst = IP4_ADDR_FULL_MASK;
}
if (spec.match_flags & EFX_FILTER_MATCH_REM_HOST) {
uip_entry->ip4src = spec.rem_host[0];
uip_mask->ip4src = IP4_ADDR_FULL_MASK;
}
} else if (spec.match_flags & EFX_FILTER_MATCH_ETHER_TYPE &&
spec.ether_type == htons(ETH_P_IPV6) &&
!(spec.match_flags &
~(EFX_FILTER_MATCH_ETHER_TYPE | EFX_FILTER_MATCH_OUTER_VID |
EFX_FILTER_MATCH_LOC_HOST | EFX_FILTER_MATCH_REM_HOST |
EFX_FILTER_MATCH_IP_PROTO))) {
rule->flow_type = IPV6_USER_FLOW;
if (spec.match_flags & EFX_FILTER_MATCH_IP_PROTO) {
uip6_mask->l4_proto = IP_PROTO_FULL_MASK;
uip6_entry->l4_proto = spec.ip_proto;
}
if (spec.match_flags & EFX_FILTER_MATCH_LOC_HOST) {
memcpy(uip6_entry->ip6dst, spec.loc_host,
sizeof(uip6_entry->ip6dst));
ip6_fill_mask(uip6_mask->ip6dst);
}
if (spec.match_flags & EFX_FILTER_MATCH_REM_HOST) {
memcpy(uip6_entry->ip6src, spec.rem_host,
sizeof(uip6_entry->ip6src));
ip6_fill_mask(uip6_mask->ip6src);
}
} else {
/* The above should handle all filters that we insert */
WARN_ON(1);
......@@ -946,11 +1028,27 @@ efx_ethtool_get_rxnfc(struct net_device *net_dev,
}
}
static inline bool ip6_mask_is_full(__be32 mask[4])
{
return !~(mask[0] & mask[1] & mask[2] & mask[3]);
}
static inline bool ip6_mask_is_empty(__be32 mask[4])
{
return !(mask[0] | mask[1] | mask[2] | mask[3]);
}
static int efx_ethtool_set_class_rule(struct efx_nic *efx,
struct ethtool_rx_flow_spec *rule)
{
struct ethtool_tcpip4_spec *ip_entry = &rule->h_u.tcp_ip4_spec;
struct ethtool_tcpip4_spec *ip_mask = &rule->m_u.tcp_ip4_spec;
struct ethtool_usrip4_spec *uip_entry = &rule->h_u.usr_ip4_spec;
struct ethtool_usrip4_spec *uip_mask = &rule->m_u.usr_ip4_spec;
struct ethtool_tcpip6_spec *ip6_entry = &rule->h_u.tcp_ip6_spec;
struct ethtool_tcpip6_spec *ip6_mask = &rule->m_u.tcp_ip6_spec;
struct ethtool_usrip6_spec *uip6_entry = &rule->h_u.usr_ip6_spec;
struct ethtool_usrip6_spec *uip6_mask = &rule->m_u.usr_ip6_spec;
struct ethhdr *mac_entry = &rule->h_u.ether_spec;
struct ethhdr *mac_mask = &rule->m_u.ether_spec;
struct efx_filter_spec spec;
......@@ -1012,6 +1110,92 @@ static int efx_ethtool_set_class_rule(struct efx_nic *efx,
return -EINVAL;
break;
case TCP_V6_FLOW:
case UDP_V6_FLOW:
spec.match_flags = (EFX_FILTER_MATCH_ETHER_TYPE |
EFX_FILTER_MATCH_IP_PROTO);
spec.ether_type = htons(ETH_P_IPV6);
spec.ip_proto = ((rule->flow_type & ~FLOW_EXT) == TCP_V6_FLOW ?
IPPROTO_TCP : IPPROTO_UDP);
if (!ip6_mask_is_empty(ip6_mask->ip6dst)) {
if (!ip6_mask_is_full(ip6_mask->ip6dst))
return -EINVAL;
spec.match_flags |= EFX_FILTER_MATCH_LOC_HOST;
memcpy(spec.loc_host, ip6_entry->ip6dst, sizeof(spec.loc_host));
}
if (!ip6_mask_is_empty(ip6_mask->ip6src)) {
if (!ip6_mask_is_full(ip6_mask->ip6src))
return -EINVAL;
spec.match_flags |= EFX_FILTER_MATCH_REM_HOST;
memcpy(spec.rem_host, ip6_entry->ip6src, sizeof(spec.rem_host));
}
if (ip6_mask->pdst) {
if (ip6_mask->pdst != PORT_FULL_MASK)
return -EINVAL;
spec.match_flags |= EFX_FILTER_MATCH_LOC_PORT;
spec.loc_port = ip6_entry->pdst;
}
if (ip6_mask->psrc) {
if (ip6_mask->psrc != PORT_FULL_MASK)
return -EINVAL;
spec.match_flags |= EFX_FILTER_MATCH_REM_PORT;
spec.rem_port = ip6_entry->psrc;
}
if (ip6_mask->tclass)
return -EINVAL;
break;
case IPV4_USER_FLOW:
if (uip_mask->l4_4_bytes || uip_mask->tos || uip_mask->ip_ver ||
uip_entry->ip_ver != ETH_RX_NFC_IP4)
return -EINVAL;
spec.match_flags = EFX_FILTER_MATCH_ETHER_TYPE;
spec.ether_type = htons(ETH_P_IP);
if (uip_mask->ip4dst) {
if (uip_mask->ip4dst != IP4_ADDR_FULL_MASK)
return -EINVAL;
spec.match_flags |= EFX_FILTER_MATCH_LOC_HOST;
spec.loc_host[0] = uip_entry->ip4dst;
}
if (uip_mask->ip4src) {
if (uip_mask->ip4src != IP4_ADDR_FULL_MASK)
return -EINVAL;
spec.match_flags |= EFX_FILTER_MATCH_REM_HOST;
spec.rem_host[0] = uip_entry->ip4src;
}
if (uip_mask->proto) {
if (uip_mask->proto != IP_PROTO_FULL_MASK)
return -EINVAL;
spec.match_flags |= EFX_FILTER_MATCH_IP_PROTO;
spec.ip_proto = uip_entry->proto;
}
break;
case IPV6_USER_FLOW:
if (uip6_mask->l4_4_bytes || uip6_mask->tclass)
return -EINVAL;
spec.match_flags = EFX_FILTER_MATCH_ETHER_TYPE;
spec.ether_type = htons(ETH_P_IPV6);
if (!ip6_mask_is_empty(uip6_mask->ip6dst)) {
if (!ip6_mask_is_full(uip6_mask->ip6dst))
return -EINVAL;
spec.match_flags |= EFX_FILTER_MATCH_LOC_HOST;
memcpy(spec.loc_host, uip6_entry->ip6dst, sizeof(spec.loc_host));
}
if (!ip6_mask_is_empty(uip6_mask->ip6src)) {
if (!ip6_mask_is_full(uip6_mask->ip6src))
return -EINVAL;
spec.match_flags |= EFX_FILTER_MATCH_REM_HOST;
memcpy(spec.rem_host, uip6_entry->ip6src, sizeof(spec.rem_host));
}
if (uip6_mask->l4_proto) {
if (uip6_mask->l4_proto != IP_PROTO_FULL_MASK)
return -EINVAL;
spec.match_flags |= EFX_FILTER_MATCH_IP_PROTO;
spec.ip_proto = uip6_entry->l4_proto;
}
break;
case ETHER_FLOW:
if (!is_zero_ether_addr(mac_mask->h_dest)) {
if (ether_addr_equal(mac_mask->h_dest,
......
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