// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2021, Intel Corporation. */
/* advanced RSS configuration ethtool support for iavf */
#include "iavf.h"
/**
* iavf_fill_adv_rss_ip4_hdr - fill the IPv4 RSS protocol header
* @hdr: the virtchnl message protocol header data structure
* @hash_flds: the RSS configuration protocol hash fields
*/
static void
iavf_fill_adv_rss_ip4_hdr(struct virtchnl_proto_hdr *hdr, u64 hash_flds)
{
VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, IPV4);
if (hash_flds & IAVF_ADV_RSS_HASH_FLD_IPV4_SA)
VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, IPV4, SRC);
if (hash_flds & IAVF_ADV_RSS_HASH_FLD_IPV4_DA)
VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, IPV4, DST);
}
/**
* iavf_fill_adv_rss_ip6_hdr - fill the IPv6 RSS protocol header
* @hdr: the virtchnl message protocol header data structure
* @hash_flds: the RSS configuration protocol hash fields
*/
static void
iavf_fill_adv_rss_ip6_hdr(struct virtchnl_proto_hdr *hdr, u64 hash_flds)
{
VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, IPV6);
if (hash_flds & IAVF_ADV_RSS_HASH_FLD_IPV6_SA)
VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, IPV6, SRC);
if (hash_flds & IAVF_ADV_RSS_HASH_FLD_IPV6_DA)
VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, IPV6, DST);
}
/**
* iavf_fill_adv_rss_tcp_hdr - fill the TCP RSS protocol header
* @hdr: the virtchnl message protocol header data structure
* @hash_flds: the RSS configuration protocol hash fields
*/
static void
iavf_fill_adv_rss_tcp_hdr(struct virtchnl_proto_hdr *hdr, u64 hash_flds)
{
VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, TCP);
if (hash_flds & IAVF_ADV_RSS_HASH_FLD_TCP_SRC_PORT)
VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, TCP, SRC_PORT);
if (hash_flds & IAVF_ADV_RSS_HASH_FLD_TCP_DST_PORT)
VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, TCP, DST_PORT);
}
/**
* iavf_fill_adv_rss_udp_hdr - fill the UDP RSS protocol header
* @hdr: the virtchnl message protocol header data structure
* @hash_flds: the RSS configuration protocol hash fields
*/
static void
iavf_fill_adv_rss_udp_hdr(struct virtchnl_proto_hdr *hdr, u64 hash_flds)
{
VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, UDP);
if (hash_flds & IAVF_ADV_RSS_HASH_FLD_UDP_SRC_PORT)
VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, UDP, SRC_PORT);
if (hash_flds & IAVF_ADV_RSS_HASH_FLD_UDP_DST_PORT)
VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, UDP, DST_PORT);
}
/**
* iavf_fill_adv_rss_sctp_hdr - fill the SCTP RSS protocol header
* @hdr: the virtchnl message protocol header data structure
* @hash_flds: the RSS configuration protocol hash fields
*/
static void
iavf_fill_adv_rss_sctp_hdr(struct virtchnl_proto_hdr *hdr, u64 hash_flds)
{
VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, SCTP);
if (hash_flds & IAVF_ADV_RSS_HASH_FLD_SCTP_SRC_PORT)
VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, SCTP, SRC_PORT);
if (hash_flds & IAVF_ADV_RSS_HASH_FLD_SCTP_DST_PORT)
VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, SCTP, DST_PORT);
}
/**
* iavf_fill_adv_rss_cfg_msg - fill the RSS configuration into virtchnl message
* @rss_cfg: the virtchnl message to be filled with RSS configuration setting
* @packet_hdrs: the RSS configuration protocol header types
* @hash_flds: the RSS configuration protocol hash fields
* @symm: if true, symmetric hash is required
*
* Returns 0 if the RSS configuration virtchnl message is filled successfully
*/
int
iavf_fill_adv_rss_cfg_msg(struct virtchnl_rss_cfg *rss_cfg,
u32 packet_hdrs, u64 hash_flds, bool symm)
{
struct virtchnl_proto_hdrs *proto_hdrs = &rss_cfg->proto_hdrs;
struct virtchnl_proto_hdr *hdr;
if (symm)
rss_cfg->rss_algorithm = VIRTCHNL_RSS_ALG_TOEPLITZ_SYMMETRIC;
else
rss_cfg->rss_algorithm = VIRTCHNL_RSS_ALG_TOEPLITZ_ASYMMETRIC;
proto_hdrs->tunnel_level = 0; /* always outer layer */
hdr = &proto_hdrs->proto_hdr[proto_hdrs->count++];
switch (packet_hdrs & IAVF_ADV_RSS_FLOW_SEG_HDR_L3) {
case IAVF_ADV_RSS_FLOW_SEG_HDR_IPV4:
iavf_fill_adv_rss_ip4_hdr(hdr, hash_flds);
break;
case IAVF_ADV_RSS_FLOW_SEG_HDR_IPV6:
iavf_fill_adv_rss_ip6_hdr(hdr, hash_flds);
break;
default:
return -EINVAL;
}
hdr = &proto_hdrs->proto_hdr[proto_hdrs->count++];
switch (packet_hdrs & IAVF_ADV_RSS_FLOW_SEG_HDR_L4) {
case IAVF_ADV_RSS_FLOW_SEG_HDR_TCP:
iavf_fill_adv_rss_tcp_hdr(hdr, hash_flds);
break;
case IAVF_ADV_RSS_FLOW_SEG_HDR_UDP:
iavf_fill_adv_rss_udp_hdr(hdr, hash_flds);
break;
case IAVF_ADV_RSS_FLOW_SEG_HDR_SCTP:
iavf_fill_adv_rss_sctp_hdr(hdr, hash_flds);
break;
default:
return -EINVAL;
}
return 0;
}
/**
* iavf_find_adv_rss_cfg_by_hdrs - find RSS configuration with header type
* @adapter: pointer to the VF adapter structure
* @packet_hdrs: protocol header type to find.
*
* Returns pointer to advance RSS configuration if found or null
*/
struct iavf_adv_rss *
iavf_find_adv_rss_cfg_by_hdrs(struct iavf_adapter *adapter, u32 packet_hdrs)
{
struct iavf_adv_rss *rss;
list_for_each_entry(rss, &adapter->adv_rss_list_head, list)
if (rss->packet_hdrs == packet_hdrs)
return rss;
return NULL;
}
/**
* iavf_print_adv_rss_cfg
* @adapter: pointer to the VF adapter structure
* @rss: pointer to the advance RSS configuration to print
* @action: the string description about how to handle the RSS
* @result: the string description about the virtchnl result
*
* Print the advance RSS configuration
**/
void
iavf_print_adv_rss_cfg(struct iavf_adapter *adapter, struct iavf_adv_rss *rss,
const char *action, const char *result)
{
u32 packet_hdrs = rss->packet_hdrs;
u64 hash_flds = rss->hash_flds;
static char hash_opt[300];
const char *proto;
if (packet_hdrs & IAVF_ADV_RSS_FLOW_SEG_HDR_TCP)
proto = "TCP";
else if (packet_hdrs & IAVF_ADV_RSS_FLOW_SEG_HDR_UDP)
proto = "UDP";
else if (packet_hdrs & IAVF_ADV_RSS_FLOW_SEG_HDR_SCTP)
proto = "SCTP";
else
return;
memset(hash_opt, 0, sizeof(hash_opt));
strcat(hash_opt, proto);
if (packet_hdrs & IAVF_ADV_RSS_FLOW_SEG_HDR_IPV4)
strcat(hash_opt, "v4 ");
else
strcat(hash_opt, "v6 ");
if (hash_flds & (IAVF_ADV_RSS_HASH_FLD_IPV4_SA |
IAVF_ADV_RSS_HASH_FLD_IPV6_SA))
strcat(hash_opt, "IP SA,");
if (hash_flds & (IAVF_ADV_RSS_HASH_FLD_IPV4_DA |
IAVF_ADV_RSS_HASH_FLD_IPV6_DA))
strcat(hash_opt, "IP DA,");
if (hash_flds & (IAVF_ADV_RSS_HASH_FLD_TCP_SRC_PORT |
IAVF_ADV_RSS_HASH_FLD_UDP_SRC_PORT |
IAVF_ADV_RSS_HASH_FLD_SCTP_SRC_PORT))
strcat(hash_opt, "src port,");
if (hash_flds & (IAVF_ADV_RSS_HASH_FLD_TCP_DST_PORT |
IAVF_ADV_RSS_HASH_FLD_UDP_DST_PORT |
IAVF_ADV_RSS_HASH_FLD_SCTP_DST_PORT))
strcat(hash_opt, "dst port,");
if (!action)
action = "";
if (!result)
result = "";
dev_info(&adapter->pdev->dev, "%s %s %s\n", action, hash_opt, result);
}
Codebase Browser
linux