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nfp: replace num_irqs with max_r_vecs

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num_irqs is not used anywhere, replace it with max_r_vecs which holds
number of allocated RX/TX vectors and is going to be useful soon.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski 2016-10-31 20:43:21 +00:00 committed by David S. Miller
parent 4b27a1eb7b
commit b33ae997a3
2 changed files with 10 additions and 8 deletions
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4
drivers/net/ethernet/netronome/nfp/nfp_net.h
View File

@ -456,7 +456,7 @@ struct nfp_stat_pair {
* @rxd_cnt: Size of the RX ring in number of descriptors * @rxd_cnt: Size of the RX ring in number of descriptors
* @tx_rings: Array of pre-allocated TX ring structures * @tx_rings: Array of pre-allocated TX ring structures
* @rx_rings: Array of pre-allocated RX ring structures * @rx_rings: Array of pre-allocated RX ring structures
* @num_irqs: Number of allocated interrupt vectors * @max_r_vecs: Number of allocated interrupt vectors for RX/TX
* @num_r_vecs: Number of used ring vectors * @num_r_vecs: Number of used ring vectors
* @r_vecs: Pre-allocated array of ring vectors * @r_vecs: Pre-allocated array of ring vectors
* @irq_entries: Pre-allocated array of MSI-X entries * @irq_entries: Pre-allocated array of MSI-X entries
@ -540,7 +540,7 @@ struct nfp_net {
int txd_cnt; int txd_cnt;
int rxd_cnt; int rxd_cnt;
unsigned int num_irqs; unsigned int max_r_vecs;
unsigned int num_r_vecs; unsigned int num_r_vecs;
struct nfp_net_r_vector r_vecs[NFP_NET_MAX_R_VECS]; struct nfp_net_r_vector r_vecs[NFP_NET_MAX_R_VECS];
struct msix_entry irq_entries[NFP_NET_MAX_IRQS]; struct msix_entry irq_entries[NFP_NET_MAX_IRQS];

14
drivers/net/ethernet/netronome/nfp/nfp_net_common.c
View File

@ -316,22 +316,24 @@ static int nfp_net_msix_alloc(struct nfp_net *nn, int nr_vecs)
int nfp_net_irqs_alloc(struct nfp_net *nn) int nfp_net_irqs_alloc(struct nfp_net *nn)
{ {
int wanted_irqs; int wanted_irqs;
unsigned int n;
wanted_irqs = nn->num_r_vecs + NFP_NET_NON_Q_VECTORS; wanted_irqs = nn->num_r_vecs + NFP_NET_NON_Q_VECTORS;
nn->num_irqs = nfp_net_msix_alloc(nn, wanted_irqs); n = nfp_net_msix_alloc(nn, wanted_irqs);
if (nn->num_irqs == 0) { if (n == 0) {
nn_err(nn, "Failed to allocate MSI-X IRQs\n"); nn_err(nn, "Failed to allocate MSI-X IRQs\n");
return 0; return 0;
} }
nn->num_r_vecs = nn->num_irqs - NFP_NET_NON_Q_VECTORS; nn->max_r_vecs = n - NFP_NET_NON_Q_VECTORS;
nn->num_r_vecs = nn->max_r_vecs;
if (nn->num_irqs < wanted_irqs) if (n < wanted_irqs)
nn_warn(nn, "Unable to allocate %d vectors. Got %d instead\n", nn_warn(nn, "Unable to allocate %d vectors. Got %d instead\n",
wanted_irqs, nn->num_irqs); wanted_irqs, n);
return nn->num_irqs; return n;
} }
/** /**