diff options
| author | Ben Hutchings <bhutchings@solarflare.com> | 2011-12-15 13:55:01 +0000 |
|---|---|---|
| committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2014-03-31 01:19:57 +0200 |
| commit | 5701f7db2d05c59b7edb51325a4cbed72aec7c90 (patch) | |
| tree | 4bee39d906fcca30070f5002428a93e89de833be /drivers/net/cxgb4/cxgb4_main.c | |
| parent | f195d3bc9cfb38159f8a3a299222396e0005aa91 (diff) | |
ethtool: Centralise validation of ETHTOOL_{G, S}RXFHINDIR parameters
Add a new ethtool operation (get_rxfh_indir_size) to get the
indirectional table size. Use this to validate the user buffer size
before calling get_rxfh_indir or set_rxfh_indir. Use get_rxnfc to get
the number of RX rings, and validate the contents of the new
indirection table before calling set_rxfh_indir. Remove this
validation from drivers.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Acked-by: Dimitris Michailidis <dm@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/cxgb4/cxgb4_main.c')
| -rw-r--r-- | drivers/net/cxgb4/cxgb4_main.c | 27 |
1 files changed, 14 insertions, 13 deletions
diff --git a/drivers/net/cxgb4/cxgb4_main.c b/drivers/net/cxgb4/cxgb4_main.c index b4efa292fd6f..b6a3ed69512c 100644 --- a/drivers/net/cxgb4/cxgb4_main.c +++ b/drivers/net/cxgb4/cxgb4_main.c @@ -1871,30 +1871,30 @@ static int cxgb_set_features(struct net_device *dev, u32 features) return err; } -static int get_rss_table(struct net_device *dev, struct ethtool_rxfh_indir *p) +static u32 get_rss_table_size(struct net_device *dev) { const struct port_info *pi = netdev_priv(dev); - unsigned int n = min_t(unsigned int, p->size, pi->rss_size); - p->size = pi->rss_size; + return pi->rss_size; +} + +static int get_rss_table(struct net_device *dev, u32 *p) +{ + const struct port_info *pi = netdev_priv(dev); + unsigned int n = pi->rss_size; + while (n--) - p->ring_index[n] = pi->rss[n]; + p[n] = pi->rss[n]; return 0; } -static int set_rss_table(struct net_device *dev, - const struct ethtool_rxfh_indir *p) +static int set_rss_table(struct net_device *dev, const u32 *p) { unsigned int i; struct port_info *pi = netdev_priv(dev); - if (p->size != pi->rss_size) - return -EINVAL; - for (i = 0; i < p->size; i++) - if (p->ring_index[i] >= pi->nqsets) - return -EINVAL; - for (i = 0; i < p->size; i++) - pi->rss[i] = p->ring_index[i]; + for (i = 0; i < pi->rss_size; i++) + pi->rss[i] = p[i]; if (pi->adapter->flags & FULL_INIT_DONE) return write_rss(pi, pi->rss); return 0; @@ -1989,6 +1989,7 @@ static struct ethtool_ops cxgb_ethtool_ops = { .get_wol = get_wol, .set_wol = set_wol, .get_rxnfc = get_rxnfc, + .get_rxfh_indir_size = get_rss_table_size, .get_rxfh_indir = get_rss_table, .set_rxfh_indir = set_rss_table, .flash_device = set_flash, |