X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=net%2Fcore%2Fethtool.c;h=550892cd6b3ff4ec1325bc1094bb9f217409c7e2;hb=001ce546bb537bb5b7821f05633556a0c9787e32;hp=06dfb293e5aafa10ab2754bfb80d29ad29f2db95;hpb=1dd7dcb6eaa677b034e7ef63df8320277507ae70;p=firefly-linux-kernel-4.4.55.git diff --git a/net/core/ethtool.c b/net/core/ethtool.c index 06dfb293e5aa..550892cd6b3f 100644 --- a/net/core/ethtool.c +++ b/net/core/ethtool.c @@ -25,6 +25,7 @@ #include #include #include +#include /* * Some useful ethtool_ops methods that're device independent. @@ -84,7 +85,6 @@ static const char netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN] [NETIF_F_GSO_IPIP_BIT] = "tx-ipip-segmentation", [NETIF_F_GSO_SIT_BIT] = "tx-sit-segmentation", [NETIF_F_GSO_UDP_TUNNEL_BIT] = "tx-udp_tnl-segmentation", - [NETIF_F_GSO_MPLS_BIT] = "tx-mpls-segmentation", [NETIF_F_FCOE_CRC_BIT] = "tx-checksum-fcoe-crc", [NETIF_F_SCTP_CSUM_BIT] = "tx-checksum-sctp", @@ -100,6 +100,12 @@ static const char netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN] [NETIF_F_BUSY_POLL_BIT] = "busy-poll", }; +static const char +rss_hash_func_strings[ETH_RSS_HASH_FUNCS_COUNT][ETH_GSTRING_LEN] = { + [ETH_RSS_HASH_TOP_BIT] = "toeplitz", + [ETH_RSS_HASH_XOR_BIT] = "xor", +}; + static int ethtool_get_features(struct net_device *dev, void __user *useraddr) { struct ethtool_gfeatures cmd = { @@ -185,6 +191,9 @@ static int __ethtool_get_sset_count(struct net_device *dev, int sset) if (sset == ETH_SS_FEATURES) return ARRAY_SIZE(netdev_features_strings); + if (sset == ETH_SS_RSS_HASH_FUNCS) + return ARRAY_SIZE(rss_hash_func_strings); + if (ops->get_sset_count && ops->get_strings) return ops->get_sset_count(dev, sset); else @@ -199,6 +208,9 @@ static void __ethtool_get_strings(struct net_device *dev, if (stringset == ETH_SS_FEATURES) memcpy(data, netdev_features_strings, sizeof(netdev_features_strings)); + else if (stringset == ETH_SS_RSS_HASH_FUNCS) + memcpy(data, rss_hash_func_strings, + sizeof(rss_hash_func_strings)); else /* ops->get_strings is valid because checked earlier */ ops->get_strings(dev, stringset, data); @@ -574,6 +586,16 @@ static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr, return 0; } +u8 netdev_rss_key[NETDEV_RSS_KEY_LEN]; + +void netdev_rss_key_fill(void *buffer, size_t len) +{ + BUG_ON(len > sizeof(netdev_rss_key)); + net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key)); + memcpy(buffer, netdev_rss_key, len); +} +EXPORT_SYMBOL(netdev_rss_key_fill); + static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev, void __user *useraddr) { @@ -608,7 +630,7 @@ static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev, if (!indir) return -ENOMEM; - ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL); + ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL); if (ret) goto out; @@ -669,7 +691,7 @@ static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev, goto out; } - ret = ops->set_rxfh(dev, indir, NULL); + ret = ops->set_rxfh(dev, indir, NULL, ETH_RSS_HASH_NO_CHANGE); out: kfree(indir); @@ -687,12 +709,11 @@ static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, u32 total_size; u32 indir_bytes; u32 *indir = NULL; + u8 dev_hfunc = 0; u8 *hkey = NULL; u8 *rss_config; - if (!(dev->ethtool_ops->get_rxfh_indir_size || - dev->ethtool_ops->get_rxfh_key_size) || - !dev->ethtool_ops->get_rxfh) + if (!ops->get_rxfh) return -EOPNOTSUPP; if (ops->get_rxfh_indir_size) @@ -700,16 +721,14 @@ static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, if (ops->get_rxfh_key_size) dev_key_size = ops->get_rxfh_key_size(dev); - if ((dev_key_size + dev_indir_size) == 0) - return -EOPNOTSUPP; - if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) return -EFAULT; user_indir_size = rxfh.indir_size; user_key_size = rxfh.key_size; /* Check that reserved fields are 0 for now */ - if (rxfh.rss_context || rxfh.rsvd[0] || rxfh.rsvd[1]) + if (rxfh.rss_context || rxfh.rsvd8[0] || rxfh.rsvd8[1] || + rxfh.rsvd8[2] || rxfh.rsvd32) return -EINVAL; rxfh.indir_size = dev_indir_size; @@ -717,13 +736,6 @@ static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, if (copy_to_user(useraddr, &rxfh, sizeof(rxfh))) return -EFAULT; - /* If the user buffer size is 0, this is just a query for the - * device table size and key size. Otherwise, if the User size is - * not equal to device table size or key size it's an error. - */ - if (!user_indir_size && !user_key_size) - return 0; - if ((user_indir_size && (user_indir_size != dev_indir_size)) || (user_key_size && (user_key_size != dev_key_size))) return -EINVAL; @@ -740,14 +752,19 @@ static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, if (user_key_size) hkey = rss_config + indir_bytes; - ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey); - if (!ret) { - if (copy_to_user(useraddr + - offsetof(struct ethtool_rxfh, rss_config[0]), - rss_config, total_size)) - ret = -EFAULT; - } + ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey, &dev_hfunc); + if (ret) + goto out; + if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc), + &dev_hfunc, sizeof(rxfh.hfunc))) { + ret = -EFAULT; + } else if (copy_to_user(useraddr + + offsetof(struct ethtool_rxfh, rss_config[0]), + rss_config, total_size)) { + ret = -EFAULT; + } +out: kfree(rss_config); return ret; @@ -766,33 +783,31 @@ static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev, u8 *rss_config; u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]); - if (!(ops->get_rxfh_indir_size || ops->get_rxfh_key_size) || - !ops->get_rxnfc || !ops->set_rxfh) + if (!ops->get_rxnfc || !ops->set_rxfh) return -EOPNOTSUPP; if (ops->get_rxfh_indir_size) dev_indir_size = ops->get_rxfh_indir_size(dev); if (ops->get_rxfh_key_size) dev_key_size = dev->ethtool_ops->get_rxfh_key_size(dev); - if ((dev_key_size + dev_indir_size) == 0) - return -EOPNOTSUPP; if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) return -EFAULT; /* Check that reserved fields are 0 for now */ - if (rxfh.rss_context || rxfh.rsvd[0] || rxfh.rsvd[1]) + if (rxfh.rss_context || rxfh.rsvd8[0] || rxfh.rsvd8[1] || + rxfh.rsvd8[2] || rxfh.rsvd32) return -EINVAL; - /* If either indir or hash key is valid, proceed further. - * It is not valid to request that both be unchanged. + /* If either indir, hash key or function is valid, proceed further. + * Must request at least one change: indir size, hash key or function. */ if ((rxfh.indir_size && rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE && rxfh.indir_size != dev_indir_size) || (rxfh.key_size && (rxfh.key_size != dev_key_size)) || (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE && - rxfh.key_size == 0)) + rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE)) return -EINVAL; if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) @@ -835,7 +850,7 @@ static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev, } } - ret = ops->set_rxfh(dev, indir, hkey); + ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc); out: kfree(rss_config);