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igc: Add multiple receive queues control supporting

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Enable the multi queues to receive.
Program the direction of packets to specified queues according
to the mode selected in the MRQC register.
Multiple receive queues defined by filters and RSS for 4 queues.
Enable/disable RSS hashing and also to enable multiple receive queues.
This patch will allow further ethtool support development.

Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Sasha Neftin
2019-02-06 09:48:37 +02:00
committed by Jeff Kirsher
parent 459d69c407
commit 2121c2712f
4 changed files with 73 additions and 0 deletions
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9
drivers/net/ethernet/intel/igc/igc.h
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@@ -29,6 +29,7 @@ unsigned int igc_get_max_rss_queues(struct igc_adapter *adapter);
void igc_set_flag_queue_pairs(struct igc_adapter *adapter,
const u32 max_rss_queues);
int igc_reinit_queues(struct igc_adapter *adapter);
void igc_write_rss_indir_tbl(struct igc_adapter *adapter);
bool igc_has_link(struct igc_adapter *adapter);
void igc_reset(struct igc_adapter *adapter);
int igc_set_spd_dplx(struct igc_adapter *adapter, u32 spd, u8 dplx);
@@ -51,6 +52,13 @@ extern char igc_driver_version[];
#define IGC_FLAG_VLAN_PROMISC BIT(15)
#define IGC_FLAG_RX_LEGACY BIT(16)
#define IGC_FLAG_RSS_FIELD_IPV4_UDP BIT(6)
#define IGC_FLAG_RSS_FIELD_IPV6_UDP BIT(7)
#define IGC_MRQC_ENABLE_RSS_MQ 0x00000002
#define IGC_MRQC_RSS_FIELD_IPV4_UDP 0x00400000
#define IGC_MRQC_RSS_FIELD_IPV6_UDP 0x00800000
#define IGC_START_ITR 648 /* ~6000 ints/sec */
#define IGC_4K_ITR 980
#define IGC_20K_ITR 196
@@ -359,6 +367,7 @@ struct igc_adapter {
u32 *shadow_vfta;
u32 rss_queues;
u32 rss_indir_tbl_init;
/* lock for RX network flow classification filter */
spinlock_t nfc_lock;