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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright (c) 2015-2018 Linaro Limited
*/
#include <odp_posix_extensions.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <linux/ethtool.h>
#include <linux/sockios.h>
#include <net/if.h>
#include <odp_ethtool_rss.h>
#include <odp_debug_internal.h>
/**
* Get enabled hash options of a packet socket
*
* @param fd Socket file descriptor
* @param name Interface name
* @param flow_type Packet flow type
* @param options[out] Enabled hash options
*
* @retval 0 on success
* @retval <0 on failure
*/
static inline int get_rss_hash_options(int fd, const char *name,
uint32_t flow_type, uint64_t *options)
{
struct ifreq ifr;
struct ethtool_rxnfc rsscmd;
memset(&ifr, 0, sizeof(ifr));
memset(&rsscmd, 0, sizeof(rsscmd));
*options = 0;
snprintf(ifr.ifr_name, IF_NAMESIZE, "%s", name);
rsscmd.cmd = ETHTOOL_GRXFH;
rsscmd.flow_type = flow_type;
ifr.ifr_data = (caddr_t)&rsscmd;
if (ioctl(fd, SIOCETHTOOL, &ifr) < 0)
return -1;
*options = rsscmd.data;
return 0;
}
int _odp_rss_conf_get_fd(int fd, const char *name,
odp_pktin_hash_proto_t *hash_proto)
{
uint64_t options;
int rss_enabled = 0;
memset(hash_proto, 0, sizeof(odp_pktin_hash_proto_t));
get_rss_hash_options(fd, name, IPV4_FLOW, &options);
if ((options & RXH_IP_SRC) && (options & RXH_IP_DST)) {
hash_proto->proto.ipv4 = 1;
rss_enabled++;
}
get_rss_hash_options(fd, name, TCP_V4_FLOW, &options);
if ((options & RXH_IP_SRC) && (options & RXH_IP_DST) &&
(options & RXH_L4_B_0_1) && (options & RXH_L4_B_2_3)) {
hash_proto->proto.ipv4_tcp = 1;
rss_enabled++;
}
get_rss_hash_options(fd, name, UDP_V4_FLOW, &options);
if ((options & RXH_IP_SRC) && (options & RXH_IP_DST) &&
(options & RXH_L4_B_0_1) && (options & RXH_L4_B_2_3)) {
hash_proto->proto.ipv4_udp = 1;
rss_enabled++;
}
get_rss_hash_options(fd, name, IPV6_FLOW, &options);
if ((options & RXH_IP_SRC) && (options & RXH_IP_DST)) {
hash_proto->proto.ipv6 = 1;
rss_enabled++;
}
get_rss_hash_options(fd, name, TCP_V6_FLOW, &options);
if ((options & RXH_IP_SRC) && (options & RXH_IP_DST) &&
(options & RXH_L4_B_0_1) && (options & RXH_L4_B_2_3)) {
hash_proto->proto.ipv6_tcp = 1;
rss_enabled++;
}
get_rss_hash_options(fd, name, UDP_V6_FLOW, &options);
if ((options & RXH_IP_SRC) && (options & RXH_IP_DST) &&
(options & RXH_L4_B_0_1) && (options & RXH_L4_B_2_3)) {
hash_proto->proto.ipv6_udp = 1;
rss_enabled++;
}
return rss_enabled;
}
/**
* Set hash options of a packet socket
*
* @param fd Socket file descriptor
* @param name Interface name
* @param flow_type Packet flow type
* @param options Hash options
*
* @retval 0 on success
* @retval <0 on failure
*/
static inline int set_rss_hash(int fd, const char *name,
uint32_t flow_type, uint64_t options)
{
struct ifreq ifr;
struct ethtool_rxnfc rsscmd;
memset(&rsscmd, 0, sizeof(rsscmd));
snprintf(ifr.ifr_name, IF_NAMESIZE, "%s", name);
rsscmd.cmd = ETHTOOL_SRXFH;
rsscmd.flow_type = flow_type;
rsscmd.data = options;
ifr.ifr_data = (caddr_t)&rsscmd;
if (ioctl(fd, SIOCETHTOOL, &ifr) < 0)
return -1;
return 0;
}
int _odp_rss_conf_set_fd(int fd, const char *name,
const odp_pktin_hash_proto_t *hash_proto)
{
uint64_t options;
odp_pktin_hash_proto_t cur_hash;
/* Compare to currently set hash protocols */
_odp_rss_conf_get_fd(fd, name, &cur_hash);
if (hash_proto->proto.ipv4_udp && !cur_hash.proto.ipv4_udp) {
options = RXH_IP_SRC | RXH_IP_DST | RXH_L4_B_0_1 | RXH_L4_B_2_3;
if (set_rss_hash(fd, name, UDP_V4_FLOW, options))
return -1;
}
if (hash_proto->proto.ipv4_tcp && !cur_hash.proto.ipv4_tcp) {
options = RXH_IP_SRC | RXH_IP_DST | RXH_L4_B_0_1 | RXH_L4_B_2_3;
if (set_rss_hash(fd, name, TCP_V4_FLOW, options))
return -1;
}
if (hash_proto->proto.ipv6_udp && !cur_hash.proto.ipv6_udp) {
options = RXH_IP_SRC | RXH_IP_DST | RXH_L4_B_0_1 | RXH_L4_B_2_3;
if (set_rss_hash(fd, name, UDP_V6_FLOW, options))
return -1;
}
if (hash_proto->proto.ipv6_tcp && !cur_hash.proto.ipv6_tcp) {
options = RXH_IP_SRC | RXH_IP_DST | RXH_L4_B_0_1 | RXH_L4_B_2_3;
if (set_rss_hash(fd, name, TCP_V6_FLOW, options))
return -1;
}
if (hash_proto->proto.ipv4 && !cur_hash.proto.ipv4) {
options = RXH_IP_SRC | RXH_IP_DST;
if (set_rss_hash(fd, name, IPV4_FLOW, options))
return -1;
}
if (hash_proto->proto.ipv6 && !cur_hash.proto.ipv6) {
options = RXH_IP_SRC | RXH_IP_DST;
if (set_rss_hash(fd, name, IPV6_FLOW, options))
return -1;
}
return 0;
}
int _odp_rss_conf_get_supported_fd(int fd, const char *name,
odp_pktin_hash_proto_t *hash_proto)
{
uint64_t options;
int rss_supported = 0;
memset(hash_proto, 0, sizeof(odp_pktin_hash_proto_t));
if (!get_rss_hash_options(fd, name, IPV4_FLOW, &options)) {
if (!set_rss_hash(fd, name, IPV4_FLOW, options)) {
hash_proto->proto.ipv4 = 1;
rss_supported++;
}
}
if (!get_rss_hash_options(fd, name, TCP_V4_FLOW, &options)) {
if (!set_rss_hash(fd, name, TCP_V4_FLOW, options)) {
hash_proto->proto.ipv4_tcp = 1;
rss_supported++;
}
}
if (!get_rss_hash_options(fd, name, UDP_V4_FLOW, &options)) {
if (!set_rss_hash(fd, name, UDP_V4_FLOW, options)) {
hash_proto->proto.ipv4_udp = 1;
rss_supported++;
}
}
if (!get_rss_hash_options(fd, name, IPV6_FLOW, &options)) {
if (!set_rss_hash(fd, name, IPV6_FLOW, options)) {
hash_proto->proto.ipv6 = 1;
rss_supported++;
}
}
if (!get_rss_hash_options(fd, name, TCP_V6_FLOW, &options)) {
if (!set_rss_hash(fd, name, TCP_V6_FLOW, options)) {
hash_proto->proto.ipv6_tcp = 1;
rss_supported++;
}
}
if (!get_rss_hash_options(fd, name, UDP_V6_FLOW, &options)) {
if (!set_rss_hash(fd, name, UDP_V6_FLOW, options)) {
hash_proto->proto.ipv6_udp = 1;
rss_supported++;
}
}
return rss_supported;
}
void _odp_rss_conf_print(const odp_pktin_hash_proto_t *hash_proto)
{ int max_len = 512;
char str[max_len];
int len = 0;
int n = max_len - 1;
len += snprintf(&str[len], n - len, " rss conf\n");
if (hash_proto->proto.ipv4)
len += snprintf(&str[len], n - len,
" IPV4\n");
if (hash_proto->proto.ipv4_tcp)
len += snprintf(&str[len], n - len,
" IPV4 TCP\n");
if (hash_proto->proto.ipv4_udp)
len += snprintf(&str[len], n - len,
" IPV4 UDP\n");
if (hash_proto->proto.ipv6)
len += snprintf(&str[len], n - len,
" IPV6\n");
if (hash_proto->proto.ipv6_tcp)
len += snprintf(&str[len], n - len,
" IPV6 TCP\n");
if (hash_proto->proto.ipv6_udp)
len += snprintf(&str[len], n - len,
" IPV6 UDP\n");
str[len] = '\0';
_ODP_PRINT("%s\n", str);
}
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