From 3bd9b9abdf1563a22041b7255baea6d449902f1a Mon Sep 17 00:00:00 2001 From: "Gustavo A. R. Silva" Date: Tue, 29 Oct 2024 15:58:47 -0600 Subject: net: ethtool: Avoid thousands of -Wflex-array-member-not-at-end warnings -Wflex-array-member-not-at-end was introduced in GCC-14, and we are getting ready to enable it, globally. Change the type of the middle struct member currently causing trouble from `struct ethtool_link_settings` to `struct ethtool_link_settings_hdr`. Additionally, update the type of some variables in various functions that don't access the flexible-array member, changing them to the newly created `struct ethtool_link_settings_hdr`. These changes are needed because the type of the conflicting middle members changed. So, those instances that expect the type to be `struct ethtool_link_settings` should be adjusted to the newly created type `struct ethtool_link_settings_hdr`. Also, adjust variable declarations to follow the reverse xmas tree convention. Fix 3338 of the following -Wflex-array-member-not-at-end warnings: include/linux/ethtool.h:214:38: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end] Signed-off-by: Gustavo A. R. Silva Link: https://patch.msgid.link/0bc2809fe2a6c11dd4c8a9a10d9bd65cccdb559b.1730238285.git.gustavoars@kernel.org Signed-off-by: Jakub Kicinski --- include/linux/ethtool.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux/ethtool.h') diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index 12f6dc567598..1199e308c8dd 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -211,7 +211,7 @@ void ethtool_rxfh_context_lost(struct net_device *dev, u32 context_id); * fields, but they are allowed to overwrite them (will be ignored). */ struct ethtool_link_ksettings { - struct ethtool_link_settings base; + struct ethtool_link_settings_hdr base; struct { __ETHTOOL_DECLARE_LINK_MODE_MASK(supported); __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising); -- cgit v1.2.3 From 9e43ad7a1edef268acac603e1975c8f50a20d02f Mon Sep 17 00:00:00 2001 From: Edward Cree Date: Wed, 13 Nov 2024 12:13:09 +0000 Subject: net: ethtool: only allow set_rxnfc with rss + ring_cookie if driver opts in Ethtool ntuple filters with FLOW_RSS were originally defined as adding the base queue ID (ring_cookie) to the value from the indirection table, so that the same table could distribute over more than one set of queues when used by different filters. However, some drivers / hardware ignore the ring_cookie, and simply use the indirection table entries as queue IDs directly. Thus, for drivers which have not opted in by setting ethtool_ops.cap_rss_rxnfc_adds to declare that they support the original (addition) semantics, reject in ethtool_set_rxnfc any filter which combines FLOW_RSS and a nonzero ring. (For a ring_cookie of zero, both behaviours are equivalent.) Set the cap bit in sfc, as it is known to support this feature. Signed-off-by: Edward Cree Reviewed-by: Martin Habets Link: https://patch.msgid.link/cc3da0844083b0e301a33092a6299e4042b65221.1731499022.git.ecree.xilinx@gmail.com Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/sfc/ef100_ethtool.c | 1 + drivers/net/ethernet/sfc/ethtool.c | 1 + include/linux/ethtool.h | 4 ++++ net/ethtool/ioctl.c | 5 +++++ 4 files changed, 11 insertions(+) (limited to 'include/linux/ethtool.h') diff --git a/drivers/net/ethernet/sfc/ef100_ethtool.c b/drivers/net/ethernet/sfc/ef100_ethtool.c index 5c2551369812..6c3b74000d3b 100644 --- a/drivers/net/ethernet/sfc/ef100_ethtool.c +++ b/drivers/net/ethernet/sfc/ef100_ethtool.c @@ -59,6 +59,7 @@ const struct ethtool_ops ef100_ethtool_ops = { .get_rxfh_indir_size = efx_ethtool_get_rxfh_indir_size, .get_rxfh_key_size = efx_ethtool_get_rxfh_key_size, .rxfh_per_ctx_key = true, + .cap_rss_rxnfc_adds = true, .rxfh_priv_size = sizeof(struct efx_rss_context_priv), .get_rxfh = efx_ethtool_get_rxfh, .set_rxfh = efx_ethtool_set_rxfh, diff --git a/drivers/net/ethernet/sfc/ethtool.c b/drivers/net/ethernet/sfc/ethtool.c index bb1930818beb..83d715544f7f 100644 --- a/drivers/net/ethernet/sfc/ethtool.c +++ b/drivers/net/ethernet/sfc/ethtool.c @@ -263,6 +263,7 @@ const struct ethtool_ops efx_ethtool_ops = { .get_rxfh_indir_size = efx_ethtool_get_rxfh_indir_size, .get_rxfh_key_size = efx_ethtool_get_rxfh_key_size, .rxfh_per_ctx_key = true, + .cap_rss_rxnfc_adds = true, .rxfh_priv_size = sizeof(struct efx_rss_context_priv), .get_rxfh = efx_ethtool_get_rxfh, .set_rxfh = efx_ethtool_set_rxfh, diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index 1199e308c8dd..299280c94d07 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -734,6 +734,9 @@ struct kernel_ethtool_ts_info { * @rxfh_per_ctx_key: device supports setting different RSS key for each * additional context. Netlink API should report hfunc, key, and input_xfrm * for every context, not just context 0. + * @cap_rss_rxnfc_adds: device supports nonzero ring_cookie in filters with + * %FLOW_RSS flag; the queue ID from the filter is added to the value from + * the indirection table to determine the delivery queue. * @rxfh_indir_space: max size of RSS indirection tables, if indirection table * size as returned by @get_rxfh_indir_size may change during lifetime * of the device. Leave as 0 if the table size is constant. @@ -956,6 +959,7 @@ struct ethtool_ops { u32 cap_rss_ctx_supported:1; u32 cap_rss_sym_xor_supported:1; u32 rxfh_per_ctx_key:1; + u32 cap_rss_rxnfc_adds:1; u32 rxfh_indir_space; u16 rxfh_key_space; u16 rxfh_priv_size; diff --git a/net/ethtool/ioctl.c b/net/ethtool/ioctl.c index 7da94e26ced6..d86399bcf223 100644 --- a/net/ethtool/ioctl.c +++ b/net/ethtool/ioctl.c @@ -992,6 +992,11 @@ static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev, if (rc) return rc; + /* Nonzero ring with RSS only makes sense if NIC adds them together */ + if (info.flow_type & FLOW_RSS && !ops->cap_rss_rxnfc_adds && + ethtool_get_flow_spec_ring(info.fs.ring_cookie)) + return -EINVAL; + if (ops->get_rxfh) { struct ethtool_rxfh_param rxfh = {}; -- cgit v1.2.3 From 1cfb5e57886aa69a992ff0ebd32e4651eb0fc995 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Fri, 15 Nov 2024 12:43:03 -0800 Subject: Revert "net: ethtool: Avoid thousands of -Wflex-array-member-not-at-end warnings" This reverts commit 3bd9b9abdf1563a22041b7255baea6d449902f1a. We cannot use the new tagged struct group because it throws C++ errors even under "extern C". Signed-off-by: Kees Cook Link: https://patch.msgid.link/20241115204308.3821419-1-kees@kernel.org Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 6 +++--- drivers/net/ethernet/chelsio/cxgb4/cxgb4_ethtool.c | 4 ++-- drivers/net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c | 2 +- drivers/net/ethernet/cisco/enic/enic_ethtool.c | 2 +- drivers/net/ethernet/qlogic/qede/qede_ethtool.c | 4 ++-- include/linux/ethtool.h | 2 +- net/ethtool/ioctl.c | 2 +- net/ethtool/linkinfo.c | 8 ++++---- net/ethtool/linkmodes.c | 18 +++++++----------- 9 files changed, 22 insertions(+), 26 deletions(-) (limited to 'include/linux/ethtool.h') diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c index cfd2c65b1c90..061a40b1974b 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c @@ -2780,7 +2780,7 @@ u32 bnxt_fw_to_ethtool_speed(u16 fw_link_speed) static void bnxt_get_default_speeds(struct ethtool_link_ksettings *lk_ksettings, struct bnxt_link_info *link_info) { - struct ethtool_link_settings_hdr *base = &lk_ksettings->base; + struct ethtool_link_settings *base = &lk_ksettings->base; if (link_info->link_state == BNXT_LINK_STATE_UP) { base->speed = bnxt_fw_to_ethtool_speed(link_info->link_speed); @@ -2799,7 +2799,7 @@ static void bnxt_get_default_speeds(struct ethtool_link_ksettings *lk_ksettings, static int bnxt_get_link_ksettings(struct net_device *dev, struct ethtool_link_ksettings *lk_ksettings) { - struct ethtool_link_settings_hdr *base = &lk_ksettings->base; + struct ethtool_link_settings *base = &lk_ksettings->base; enum ethtool_link_mode_bit_indices link_mode; struct bnxt *bp = netdev_priv(dev); struct bnxt_link_info *link_info; @@ -3022,9 +3022,9 @@ u16 bnxt_get_fw_auto_link_speeds(const unsigned long *mode) static int bnxt_set_link_ksettings(struct net_device *dev, const struct ethtool_link_ksettings *lk_ksettings) { - const struct ethtool_link_settings_hdr *base = &lk_ksettings->base; struct bnxt *bp = netdev_priv(dev); struct bnxt_link_info *link_info = &bp->link_info; + const struct ethtool_link_settings *base = &lk_ksettings->base; bool set_pause = false; u32 speed, lanes = 0; int rc = 0; diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_ethtool.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_ethtool.c index 45d28a65347e..7f3f5afa864f 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_ethtool.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_ethtool.c @@ -662,8 +662,8 @@ static unsigned int lmm_to_fw_caps(const unsigned long *link_mode_mask) static int get_link_ksettings(struct net_device *dev, struct ethtool_link_ksettings *link_ksettings) { - struct ethtool_link_settings_hdr *base = &link_ksettings->base; struct port_info *pi = netdev_priv(dev); + struct ethtool_link_settings *base = &link_ksettings->base; /* For the nonce, the Firmware doesn't send up Port State changes * when the Virtual Interface attached to the Port is down. So @@ -717,9 +717,9 @@ static int get_link_ksettings(struct net_device *dev, static int set_link_ksettings(struct net_device *dev, const struct ethtool_link_ksettings *link_ksettings) { - const struct ethtool_link_settings_hdr *base = &link_ksettings->base; struct port_info *pi = netdev_priv(dev); struct link_config *lc = &pi->link_cfg; + const struct ethtool_link_settings *base = &link_ksettings->base; struct link_config old_lc; unsigned int fw_caps; int ret = 0; diff --git a/drivers/net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c b/drivers/net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c index 61d08547e3f9..2fbe0f059a0b 100644 --- a/drivers/net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c +++ b/drivers/net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c @@ -1436,8 +1436,8 @@ static void fw_caps_to_lmm(enum fw_port_type port_type, static int cxgb4vf_get_link_ksettings(struct net_device *dev, struct ethtool_link_ksettings *link_ksettings) { - struct ethtool_link_settings_hdr *base = &link_ksettings->base; struct port_info *pi = netdev_priv(dev); + struct ethtool_link_settings *base = &link_ksettings->base; /* For the nonce, the Firmware doesn't send up Port State changes * when the Virtual Interface attached to the Port is down. So diff --git a/drivers/net/ethernet/cisco/enic/enic_ethtool.c b/drivers/net/ethernet/cisco/enic/enic_ethtool.c index 95b071153fed..d607b4f0542c 100644 --- a/drivers/net/ethernet/cisco/enic/enic_ethtool.c +++ b/drivers/net/ethernet/cisco/enic/enic_ethtool.c @@ -129,8 +129,8 @@ static void enic_intr_coal_set_rx(struct enic *enic, u32 timer) static int enic_get_ksettings(struct net_device *netdev, struct ethtool_link_ksettings *ecmd) { - struct ethtool_link_settings_hdr *base = &ecmd->base; struct enic *enic = netdev_priv(netdev); + struct ethtool_link_settings *base = &ecmd->base; ethtool_link_ksettings_add_link_mode(ecmd, supported, 10000baseT_Full); diff --git a/drivers/net/ethernet/qlogic/qede/qede_ethtool.c b/drivers/net/ethernet/qlogic/qede/qede_ethtool.c index c553da16d4b1..e50e1df0a433 100644 --- a/drivers/net/ethernet/qlogic/qede/qede_ethtool.c +++ b/drivers/net/ethernet/qlogic/qede/qede_ethtool.c @@ -504,7 +504,7 @@ static int qede_get_link_ksettings(struct net_device *dev, struct ethtool_link_ksettings *cmd) { typeof(cmd->link_modes) *link_modes = &cmd->link_modes; - struct ethtool_link_settings_hdr *base = &cmd->base; + struct ethtool_link_settings *base = &cmd->base; struct qede_dev *edev = netdev_priv(dev); struct qed_link_output current_link; @@ -537,7 +537,7 @@ static int qede_get_link_ksettings(struct net_device *dev, static int qede_set_link_ksettings(struct net_device *dev, const struct ethtool_link_ksettings *cmd) { - const struct ethtool_link_settings_hdr *base = &cmd->base; + const struct ethtool_link_settings *base = &cmd->base; const struct ethtool_forced_speed_map *map; struct qede_dev *edev = netdev_priv(dev); struct qed_link_output current_link; diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index 299280c94d07..b8b935b52603 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -211,7 +211,7 @@ void ethtool_rxfh_context_lost(struct net_device *dev, u32 context_id); * fields, but they are allowed to overwrite them (will be ignored). */ struct ethtool_link_ksettings { - struct ethtool_link_settings_hdr base; + struct ethtool_link_settings base; struct { __ETHTOOL_DECLARE_LINK_MODE_MASK(supported); __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising); diff --git a/net/ethtool/ioctl.c b/net/ethtool/ioctl.c index d86399bcf223..61df8ce44379 100644 --- a/net/ethtool/ioctl.c +++ b/net/ethtool/ioctl.c @@ -425,7 +425,7 @@ convert_link_ksettings_to_legacy_settings( /* layout of the struct passed from/to userland */ struct ethtool_link_usettings { - struct ethtool_link_settings_hdr base; + struct ethtool_link_settings base; struct { __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32]; __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; diff --git a/net/ethtool/linkinfo.c b/net/ethtool/linkinfo.c index 2d5bc57160be..30b8ce275159 100644 --- a/net/ethtool/linkinfo.c +++ b/net/ethtool/linkinfo.c @@ -8,9 +8,9 @@ struct linkinfo_req_info { }; struct linkinfo_reply_data { - struct ethnl_reply_data base; - struct ethtool_link_ksettings ksettings; - struct ethtool_link_settings_hdr *lsettings; + struct ethnl_reply_data base; + struct ethtool_link_ksettings ksettings; + struct ethtool_link_settings *lsettings; }; #define LINKINFO_REPDATA(__reply_base) \ @@ -98,7 +98,7 @@ static int ethnl_set_linkinfo(struct ethnl_req_info *req_info, struct genl_info *info) { struct ethtool_link_ksettings ksettings = {}; - struct ethtool_link_settings_hdr *lsettings; + struct ethtool_link_settings *lsettings; struct net_device *dev = req_info->dev; struct nlattr **tb = info->attrs; bool mod = false; diff --git a/net/ethtool/linkmodes.c b/net/ethtool/linkmodes.c index 17e49cf89f03..259cd9ef1f2a 100644 --- a/net/ethtool/linkmodes.c +++ b/net/ethtool/linkmodes.c @@ -11,10 +11,10 @@ struct linkmodes_req_info { }; struct linkmodes_reply_data { - struct ethnl_reply_data base; - struct ethtool_link_ksettings ksettings; - struct ethtool_link_settings_hdr *lsettings; - bool peer_empty; + struct ethnl_reply_data base; + struct ethtool_link_ksettings ksettings; + struct ethtool_link_settings *lsettings; + bool peer_empty; }; #define LINKMODES_REPDATA(__reply_base) \ @@ -62,12 +62,10 @@ static int linkmodes_reply_size(const struct ethnl_req_info *req_base, { const struct linkmodes_reply_data *data = LINKMODES_REPDATA(reply_base); const struct ethtool_link_ksettings *ksettings = &data->ksettings; + const struct ethtool_link_settings *lsettings = &ksettings->base; bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; - const struct ethtool_link_settings_hdr *lsettings; int len, ret; - lsettings = &ksettings->base; - len = nla_total_size(sizeof(u8)) /* LINKMODES_AUTONEG */ + nla_total_size(sizeof(u32)) /* LINKMODES_SPEED */ + nla_total_size(sizeof(u32)) /* LINKMODES_LANES */ @@ -105,12 +103,10 @@ static int linkmodes_fill_reply(struct sk_buff *skb, { const struct linkmodes_reply_data *data = LINKMODES_REPDATA(reply_base); const struct ethtool_link_ksettings *ksettings = &data->ksettings; + const struct ethtool_link_settings *lsettings = &ksettings->base; bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; - const struct ethtool_link_settings_hdr *lsettings; int ret; - lsettings = &ksettings->base; - if (nla_put_u8(skb, ETHTOOL_A_LINKMODES_AUTONEG, lsettings->autoneg)) return -EMSGSIZE; @@ -241,7 +237,7 @@ static int ethnl_update_linkmodes(struct genl_info *info, struct nlattr **tb, struct ethtool_link_ksettings *ksettings, bool *mod, const struct net_device *dev) { - struct ethtool_link_settings_hdr *lsettings = &ksettings->base; + struct ethtool_link_settings *lsettings = &ksettings->base; bool req_speed, req_lanes, req_duplex; const struct nlattr *master_slave_cfg, *lanes_cfg; int ret; -- cgit v1.2.3