diff options
| author | Sathya Perla <sathya.perla@broadcom.com> | 2016-06-22 15:54:54 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-06-27 11:06:24 +0300 |
| commit | e261768e9e395b3bd71946104afd5550f77d049b (patch) | |
| tree | 665899898508d2e1b58506dec9c96db7eaf6b5c5 /drivers/net/ethernet/emulex/benet/be.h | |
| parent | ce7faf0a071b6d05f55d8b7b36fd796cab527427 (diff) | |
| download | linux-e261768e9e395b3bd71946104afd5550f77d049b.tar.xz | |
be2net: support asymmetric rx/tx queue counts
be2net so far supported creation of RX/TX queues only in pairs.
On configs where rx and tx queue counts are different, creation of only
the lesser number of queues has been supported.
This patch now allows a combination of RX/TX-only channels along with
combined channels. N TX-queues and M RX-queues can be created with the
following cmds:
ethtool -L ethX combined N rx M-N (when N < M)
ethtool -L ethX combined M tx N-M (when M < N)
Setting both RX-only and TX-only channels is still not supported.
It is mandatory to create atleast one combined channel.
Signed-off-by: Sathya Perla <sathya.perla@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/emulex/benet/be.h')
| -rw-r--r-- | drivers/net/ethernet/emulex/benet/be.h | 32 |
1 files changed, 27 insertions, 5 deletions
diff --git a/drivers/net/ethernet/emulex/benet/be.h b/drivers/net/ethernet/emulex/benet/be.h index f8040efb97e9..096cb1f53409 100644 --- a/drivers/net/ethernet/emulex/benet/be.h +++ b/drivers/net/ethernet/emulex/benet/be.h @@ -526,7 +526,8 @@ struct be_adapter { spinlock_t mcc_lock; /* For serializing mcc cmds to BE card */ spinlock_t mcc_cq_lock; - u16 cfg_num_qs; /* configured via set-channels */ + u16 cfg_num_rx_irqs; /* configured via set-channels */ + u16 cfg_num_tx_irqs; /* configured via set-channels */ u16 num_evt_qs; u16 num_msix_vec; struct be_eq_obj eq_obj[MAX_EVT_QS]; @@ -652,14 +653,35 @@ struct be_adapter { #define be_if_cap_flags(adapter) (adapter->res.if_cap_flags) #define be_max_pf_pool_rss_tables(adapter) \ (adapter->pool_res.max_rss_tables) +/* Max irqs avaialble for NIC */ +#define be_max_irqs(adapter) \ + (min_t(u16, be_max_nic_eqs(adapter), num_online_cpus())) -static inline u16 be_max_qs(struct be_adapter *adapter) +/* Max irqs *needed* for RX queues */ +static inline u16 be_max_rx_irqs(struct be_adapter *adapter) { - /* If no RSS, need atleast the one def RXQ */ + /* If no RSS, need atleast one irq for def-RXQ */ u16 num = max_t(u16, be_max_rss(adapter), 1); - num = min(num, be_max_nic_eqs(adapter)); - return min_t(u16, num, num_online_cpus()); + return min_t(u16, num, be_max_irqs(adapter)); +} + +/* Max irqs *needed* for TX queues */ +static inline u16 be_max_tx_irqs(struct be_adapter *adapter) +{ + return min_t(u16, be_max_txqs(adapter), be_max_irqs(adapter)); +} + +/* Max irqs *needed* for combined queues */ +static inline u16 be_max_qp_irqs(struct be_adapter *adapter) +{ + return min(be_max_tx_irqs(adapter), be_max_rx_irqs(adapter)); +} + +/* Max irqs *needed* for RX and TX queues together */ +static inline u16 be_max_any_irqs(struct be_adapter *adapter) +{ + return max(be_max_tx_irqs(adapter), be_max_rx_irqs(adapter)); } /* Is BE in pvid_tagging mode */ |