diff options
| -rw-r--r-- | include/linux/ethtool.h | 17 | ||||
| -rw-r--r-- | net/core/ethtool.c | 72 |
2 files changed, 86 insertions, 3 deletions
diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index cca1c3de140..f6f961fefbe 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -253,6 +253,17 @@ struct ethtool_gstrings { __u8 data[0]; }; +struct ethtool_sset_info { + __u32 cmd; /* ETHTOOL_GSSET_INFO */ + __u32 reserved; + __u64 sset_mask; /* input: each bit selects an sset to query */ + /* output: each bit a returned sset */ + __u32 data[0]; /* ETH_SS_xxx count, in order, based on bits + in sset_mask. One bit implies one + __u32, two bits implies two + __u32's, etc. */ +}; + enum ethtool_test_flags { ETH_TEST_FL_OFFLINE = (1 << 0), /* online / offline */ ETH_TEST_FL_FAILED = (1 << 1), /* test passed / failed */ @@ -606,9 +617,9 @@ struct ethtool_ops { #define ETHTOOL_SRXCLSRLINS 0x00000032 /* Insert RX classification rule */ #define ETHTOOL_FLASHDEV 0x00000033 /* Flash firmware to device */ #define ETHTOOL_RESET 0x00000034 /* Reset hardware */ - -#define ETHTOOL_SRXNTUPLE 0x00000035 /* Add an n-tuple filter to device */ -#define ETHTOOL_GRXNTUPLE 0x00000036 /* Get n-tuple filters from device */ +#define ETHTOOL_SRXNTUPLE 0x00000035 /* Add an n-tuple filter to device */ +#define ETHTOOL_GRXNTUPLE 0x00000036 /* Get n-tuple filters from device */ +#define ETHTOOL_GSSET_INFO 0x00000037 /* Get string set info */ /* compatibility with older code */ #define SPARC_ETH_GSET ETHTOOL_GSET diff --git a/net/core/ethtool.c b/net/core/ethtool.c index 0f2f82185ec..70075c47ada 100644 --- a/net/core/ethtool.c +++ b/net/core/ethtool.c @@ -214,6 +214,10 @@ static noinline int ethtool_get_drvinfo(struct net_device *dev, void __user *use info.cmd = ETHTOOL_GDRVINFO; ops->get_drvinfo(dev, &info); + /* + * this method of obtaining string set info is deprecated; + * consider using ETHTOOL_GSSET_INFO instead + */ if (ops->get_sset_count) { int rc; @@ -240,6 +244,71 @@ static noinline int ethtool_get_drvinfo(struct net_device *dev, void __user *use /* * noinline attribute so that gcc doesnt use too much stack in dev_ethtool() */ +static noinline int ethtool_get_sset_info(struct net_device *dev, + void __user *useraddr) +{ + struct ethtool_sset_info info; + const struct ethtool_ops *ops = dev->ethtool_ops; + u64 sset_mask; + int i, idx = 0, n_bits = 0, ret, rc; + u32 *info_buf = NULL; + + if (!ops->get_sset_count) + return -EOPNOTSUPP; + + if (copy_from_user(&info, useraddr, sizeof(info))) + return -EFAULT; + + /* store copy of mask, because we zero struct later on */ + sset_mask = info.sset_mask; + if (!sset_mask) + return 0; + + /* calculate size of return buffer */ + for (i = 0; i < 64; i++) + if (sset_mask & (1ULL << i)) + n_bits++; + + memset(&info, 0, sizeof(info)); + info.cmd = ETHTOOL_GSSET_INFO; + + info_buf = kzalloc(n_bits * sizeof(u32), GFP_USER); + if (!info_buf) + return -ENOMEM; + + /* + * fill return buffer based on input bitmask and successful + * get_sset_count return + */ + for (i = 0; i < 64; i++) { + if (!(sset_mask & (1ULL << i))) + continue; + + rc = ops->get_sset_count(dev, i); + if (rc >= 0) { + info.sset_mask |= (1ULL << i); + info_buf[idx++] = rc; + } + } + + ret = -EFAULT; + if (copy_to_user(useraddr, &info, sizeof(info))) + goto out; + + useraddr += offsetof(struct ethtool_sset_info, data); + if (copy_to_user(useraddr, info_buf, idx * sizeof(u32))) + goto out; + + ret = 0; + +out: + kfree(info_buf); + return ret; +} + +/* + * noinline attribute so that gcc doesnt use too much stack in dev_ethtool() + */ static noinline int ethtool_set_rxnfc(struct net_device *dev, void __user *useraddr) { struct ethtool_rxnfc cmd; @@ -1471,6 +1540,9 @@ int dev_ethtool(struct net *net, struct ifreq *ifr) case ETHTOOL_GRXNTUPLE: rc = ethtool_get_rx_ntuple(dev, useraddr); break; + case ETHTOOL_GSSET_INFO: + rc = ethtool_get_sset_info(dev, useraddr); + break; default: rc = -EOPNOTSUPP; } |