genetlink: remove userhdr from struct genl_info
Only three families use info->userhdr today and going forward we discourage using fixed headers in new families. So having the pointer to user header in struct genl_info is an overkill. Compute the header pointer at runtime. Reviewed-by: Johannes Berg <johannes@sipsolutions.net> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Reviewed-by: Aaron Conole <aconole@redhat.com> Link: https://lore.kernel.org/r/20230814214723.2924989-4-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
parent
fde9bd4a4d
commit
bffcc6882a
@ -159,7 +159,7 @@ static int drbd_msg_sprintf_info(struct sk_buff *skb, const char *fmt, ...)
|
|||||||
static int drbd_adm_prepare(struct drbd_config_context *adm_ctx,
|
static int drbd_adm_prepare(struct drbd_config_context *adm_ctx,
|
||||||
struct sk_buff *skb, struct genl_info *info, unsigned flags)
|
struct sk_buff *skb, struct genl_info *info, unsigned flags)
|
||||||
{
|
{
|
||||||
struct drbd_genlmsghdr *d_in = info->userhdr;
|
struct drbd_genlmsghdr *d_in = genl_info_userhdr(info);
|
||||||
const u8 cmd = info->genlhdr->cmd;
|
const u8 cmd = info->genlhdr->cmd;
|
||||||
int err;
|
int err;
|
||||||
|
|
||||||
@ -1396,8 +1396,9 @@ static void drbd_suspend_al(struct drbd_device *device)
|
|||||||
|
|
||||||
static bool should_set_defaults(struct genl_info *info)
|
static bool should_set_defaults(struct genl_info *info)
|
||||||
{
|
{
|
||||||
unsigned flags = ((struct drbd_genlmsghdr*)info->userhdr)->flags;
|
struct drbd_genlmsghdr *dh = genl_info_userhdr(info);
|
||||||
return 0 != (flags & DRBD_GENL_F_SET_DEFAULTS);
|
|
||||||
|
return 0 != (dh->flags & DRBD_GENL_F_SET_DEFAULTS);
|
||||||
}
|
}
|
||||||
|
|
||||||
static unsigned int drbd_al_extents_max(struct drbd_backing_dev *bdev)
|
static unsigned int drbd_al_extents_max(struct drbd_backing_dev *bdev)
|
||||||
@ -4276,7 +4277,7 @@ static void device_to_info(struct device_info *info,
|
|||||||
int drbd_adm_new_minor(struct sk_buff *skb, struct genl_info *info)
|
int drbd_adm_new_minor(struct sk_buff *skb, struct genl_info *info)
|
||||||
{
|
{
|
||||||
struct drbd_config_context adm_ctx;
|
struct drbd_config_context adm_ctx;
|
||||||
struct drbd_genlmsghdr *dh = info->userhdr;
|
struct drbd_genlmsghdr *dh = genl_info_userhdr(info);
|
||||||
enum drbd_ret_code retcode;
|
enum drbd_ret_code retcode;
|
||||||
|
|
||||||
retcode = drbd_adm_prepare(&adm_ctx, skb, info, DRBD_ADM_NEED_RESOURCE);
|
retcode = drbd_adm_prepare(&adm_ctx, skb, info, DRBD_ADM_NEED_RESOURCE);
|
||||||
|
@ -95,7 +95,6 @@ struct genl_family {
|
|||||||
* @snd_portid: netlink portid of sender
|
* @snd_portid: netlink portid of sender
|
||||||
* @nlhdr: netlink message header
|
* @nlhdr: netlink message header
|
||||||
* @genlhdr: generic netlink message header
|
* @genlhdr: generic netlink message header
|
||||||
* @userhdr: user specific header
|
|
||||||
* @attrs: netlink attributes
|
* @attrs: netlink attributes
|
||||||
* @_net: network namespace
|
* @_net: network namespace
|
||||||
* @user_ptr: user pointers
|
* @user_ptr: user pointers
|
||||||
@ -106,7 +105,6 @@ struct genl_info {
|
|||||||
u32 snd_portid;
|
u32 snd_portid;
|
||||||
const struct nlmsghdr * nlhdr;
|
const struct nlmsghdr * nlhdr;
|
||||||
struct genlmsghdr * genlhdr;
|
struct genlmsghdr * genlhdr;
|
||||||
void * userhdr;
|
|
||||||
struct nlattr ** attrs;
|
struct nlattr ** attrs;
|
||||||
possible_net_t _net;
|
possible_net_t _net;
|
||||||
void * user_ptr[2];
|
void * user_ptr[2];
|
||||||
@ -123,6 +121,11 @@ static inline void genl_info_net_set(struct genl_info *info, struct net *net)
|
|||||||
write_pnet(&info->_net, net);
|
write_pnet(&info->_net, net);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
static inline void *genl_info_userhdr(const struct genl_info *info)
|
||||||
|
{
|
||||||
|
return (u8 *)info->genlhdr + GENL_HDRLEN;
|
||||||
|
}
|
||||||
|
|
||||||
#define GENL_SET_ERR_MSG(info, msg) NL_SET_ERR_MSG((info)->extack, msg)
|
#define GENL_SET_ERR_MSG(info, msg) NL_SET_ERR_MSG((info)->extack, msg)
|
||||||
|
|
||||||
#define GENL_SET_ERR_MSG_FMT(info, msg, args...) \
|
#define GENL_SET_ERR_MSG_FMT(info, msg, args...) \
|
||||||
|
@ -943,7 +943,6 @@ static int genl_family_rcv_msg_doit(const struct genl_family *family,
|
|||||||
info.snd_portid = NETLINK_CB(skb).portid;
|
info.snd_portid = NETLINK_CB(skb).portid;
|
||||||
info.nlhdr = nlh;
|
info.nlhdr = nlh;
|
||||||
info.genlhdr = nlmsg_data(nlh);
|
info.genlhdr = nlmsg_data(nlh);
|
||||||
info.userhdr = nlmsg_data(nlh) + GENL_HDRLEN;
|
|
||||||
info.attrs = attrbuf;
|
info.attrs = attrbuf;
|
||||||
info.extack = extack;
|
info.extack = extack;
|
||||||
genl_info_net_set(&info, net);
|
genl_info_net_set(&info, net);
|
||||||
|
@ -1605,7 +1605,7 @@ static struct sk_buff *
|
|||||||
ovs_ct_limit_cmd_reply_start(struct genl_info *info, u8 cmd,
|
ovs_ct_limit_cmd_reply_start(struct genl_info *info, u8 cmd,
|
||||||
struct ovs_header **ovs_reply_header)
|
struct ovs_header **ovs_reply_header)
|
||||||
{
|
{
|
||||||
struct ovs_header *ovs_header = info->userhdr;
|
struct ovs_header *ovs_header = genl_info_userhdr(info);
|
||||||
struct sk_buff *skb;
|
struct sk_buff *skb;
|
||||||
|
|
||||||
skb = genlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
skb = genlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
||||||
|
@ -590,7 +590,7 @@ out:
|
|||||||
|
|
||||||
static int ovs_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info)
|
static int ovs_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info)
|
||||||
{
|
{
|
||||||
struct ovs_header *ovs_header = info->userhdr;
|
struct ovs_header *ovs_header = genl_info_userhdr(info);
|
||||||
struct net *net = sock_net(skb->sk);
|
struct net *net = sock_net(skb->sk);
|
||||||
struct nlattr **a = info->attrs;
|
struct nlattr **a = info->attrs;
|
||||||
struct sw_flow_actions *acts;
|
struct sw_flow_actions *acts;
|
||||||
@ -967,7 +967,7 @@ static int ovs_flow_cmd_new(struct sk_buff *skb, struct genl_info *info)
|
|||||||
{
|
{
|
||||||
struct net *net = sock_net(skb->sk);
|
struct net *net = sock_net(skb->sk);
|
||||||
struct nlattr **a = info->attrs;
|
struct nlattr **a = info->attrs;
|
||||||
struct ovs_header *ovs_header = info->userhdr;
|
struct ovs_header *ovs_header = genl_info_userhdr(info);
|
||||||
struct sw_flow *flow = NULL, *new_flow;
|
struct sw_flow *flow = NULL, *new_flow;
|
||||||
struct sw_flow_mask mask;
|
struct sw_flow_mask mask;
|
||||||
struct sk_buff *reply;
|
struct sk_buff *reply;
|
||||||
@ -1214,7 +1214,7 @@ static int ovs_flow_cmd_set(struct sk_buff *skb, struct genl_info *info)
|
|||||||
{
|
{
|
||||||
struct net *net = sock_net(skb->sk);
|
struct net *net = sock_net(skb->sk);
|
||||||
struct nlattr **a = info->attrs;
|
struct nlattr **a = info->attrs;
|
||||||
struct ovs_header *ovs_header = info->userhdr;
|
struct ovs_header *ovs_header = genl_info_userhdr(info);
|
||||||
struct sw_flow_key key;
|
struct sw_flow_key key;
|
||||||
struct sw_flow *flow;
|
struct sw_flow *flow;
|
||||||
struct sk_buff *reply = NULL;
|
struct sk_buff *reply = NULL;
|
||||||
@ -1315,7 +1315,7 @@ error:
|
|||||||
static int ovs_flow_cmd_get(struct sk_buff *skb, struct genl_info *info)
|
static int ovs_flow_cmd_get(struct sk_buff *skb, struct genl_info *info)
|
||||||
{
|
{
|
||||||
struct nlattr **a = info->attrs;
|
struct nlattr **a = info->attrs;
|
||||||
struct ovs_header *ovs_header = info->userhdr;
|
struct ovs_header *ovs_header = genl_info_userhdr(info);
|
||||||
struct net *net = sock_net(skb->sk);
|
struct net *net = sock_net(skb->sk);
|
||||||
struct sw_flow_key key;
|
struct sw_flow_key key;
|
||||||
struct sk_buff *reply;
|
struct sk_buff *reply;
|
||||||
@ -1374,7 +1374,7 @@ unlock:
|
|||||||
static int ovs_flow_cmd_del(struct sk_buff *skb, struct genl_info *info)
|
static int ovs_flow_cmd_del(struct sk_buff *skb, struct genl_info *info)
|
||||||
{
|
{
|
||||||
struct nlattr **a = info->attrs;
|
struct nlattr **a = info->attrs;
|
||||||
struct ovs_header *ovs_header = info->userhdr;
|
struct ovs_header *ovs_header = genl_info_userhdr(info);
|
||||||
struct net *net = sock_net(skb->sk);
|
struct net *net = sock_net(skb->sk);
|
||||||
struct sw_flow_key key;
|
struct sw_flow_key key;
|
||||||
struct sk_buff *reply;
|
struct sk_buff *reply;
|
||||||
@ -1642,7 +1642,7 @@ static void ovs_dp_reset_user_features(struct sk_buff *skb,
|
|||||||
{
|
{
|
||||||
struct datapath *dp;
|
struct datapath *dp;
|
||||||
|
|
||||||
dp = lookup_datapath(sock_net(skb->sk), info->userhdr,
|
dp = lookup_datapath(sock_net(skb->sk), genl_info_userhdr(info),
|
||||||
info->attrs);
|
info->attrs);
|
||||||
if (IS_ERR(dp))
|
if (IS_ERR(dp))
|
||||||
return;
|
return;
|
||||||
@ -1935,7 +1935,8 @@ static int ovs_dp_cmd_del(struct sk_buff *skb, struct genl_info *info)
|
|||||||
return -ENOMEM;
|
return -ENOMEM;
|
||||||
|
|
||||||
ovs_lock();
|
ovs_lock();
|
||||||
dp = lookup_datapath(sock_net(skb->sk), info->userhdr, info->attrs);
|
dp = lookup_datapath(sock_net(skb->sk), genl_info_userhdr(info),
|
||||||
|
info->attrs);
|
||||||
err = PTR_ERR(dp);
|
err = PTR_ERR(dp);
|
||||||
if (IS_ERR(dp))
|
if (IS_ERR(dp))
|
||||||
goto err_unlock_free;
|
goto err_unlock_free;
|
||||||
@ -1968,7 +1969,8 @@ static int ovs_dp_cmd_set(struct sk_buff *skb, struct genl_info *info)
|
|||||||
return -ENOMEM;
|
return -ENOMEM;
|
||||||
|
|
||||||
ovs_lock();
|
ovs_lock();
|
||||||
dp = lookup_datapath(sock_net(skb->sk), info->userhdr, info->attrs);
|
dp = lookup_datapath(sock_net(skb->sk), genl_info_userhdr(info),
|
||||||
|
info->attrs);
|
||||||
err = PTR_ERR(dp);
|
err = PTR_ERR(dp);
|
||||||
if (IS_ERR(dp))
|
if (IS_ERR(dp))
|
||||||
goto err_unlock_free;
|
goto err_unlock_free;
|
||||||
@ -2003,7 +2005,8 @@ static int ovs_dp_cmd_get(struct sk_buff *skb, struct genl_info *info)
|
|||||||
return -ENOMEM;
|
return -ENOMEM;
|
||||||
|
|
||||||
ovs_lock();
|
ovs_lock();
|
||||||
dp = lookup_datapath(sock_net(skb->sk), info->userhdr, info->attrs);
|
dp = lookup_datapath(sock_net(skb->sk), genl_info_userhdr(info),
|
||||||
|
info->attrs);
|
||||||
if (IS_ERR(dp)) {
|
if (IS_ERR(dp)) {
|
||||||
err = PTR_ERR(dp);
|
err = PTR_ERR(dp);
|
||||||
goto err_unlock_free;
|
goto err_unlock_free;
|
||||||
@ -2246,7 +2249,7 @@ static void ovs_update_headroom(struct datapath *dp, unsigned int new_headroom)
|
|||||||
static int ovs_vport_cmd_new(struct sk_buff *skb, struct genl_info *info)
|
static int ovs_vport_cmd_new(struct sk_buff *skb, struct genl_info *info)
|
||||||
{
|
{
|
||||||
struct nlattr **a = info->attrs;
|
struct nlattr **a = info->attrs;
|
||||||
struct ovs_header *ovs_header = info->userhdr;
|
struct ovs_header *ovs_header = genl_info_userhdr(info);
|
||||||
struct vport_parms parms;
|
struct vport_parms parms;
|
||||||
struct sk_buff *reply;
|
struct sk_buff *reply;
|
||||||
struct vport *vport;
|
struct vport *vport;
|
||||||
@ -2348,7 +2351,7 @@ static int ovs_vport_cmd_set(struct sk_buff *skb, struct genl_info *info)
|
|||||||
return -ENOMEM;
|
return -ENOMEM;
|
||||||
|
|
||||||
ovs_lock();
|
ovs_lock();
|
||||||
vport = lookup_vport(sock_net(skb->sk), info->userhdr, a);
|
vport = lookup_vport(sock_net(skb->sk), genl_info_userhdr(info), a);
|
||||||
err = PTR_ERR(vport);
|
err = PTR_ERR(vport);
|
||||||
if (IS_ERR(vport))
|
if (IS_ERR(vport))
|
||||||
goto exit_unlock_free;
|
goto exit_unlock_free;
|
||||||
@ -2404,7 +2407,7 @@ static int ovs_vport_cmd_del(struct sk_buff *skb, struct genl_info *info)
|
|||||||
return -ENOMEM;
|
return -ENOMEM;
|
||||||
|
|
||||||
ovs_lock();
|
ovs_lock();
|
||||||
vport = lookup_vport(sock_net(skb->sk), info->userhdr, a);
|
vport = lookup_vport(sock_net(skb->sk), genl_info_userhdr(info), a);
|
||||||
err = PTR_ERR(vport);
|
err = PTR_ERR(vport);
|
||||||
if (IS_ERR(vport))
|
if (IS_ERR(vport))
|
||||||
goto exit_unlock_free;
|
goto exit_unlock_free;
|
||||||
@ -2447,7 +2450,7 @@ exit_unlock_free:
|
|||||||
static int ovs_vport_cmd_get(struct sk_buff *skb, struct genl_info *info)
|
static int ovs_vport_cmd_get(struct sk_buff *skb, struct genl_info *info)
|
||||||
{
|
{
|
||||||
struct nlattr **a = info->attrs;
|
struct nlattr **a = info->attrs;
|
||||||
struct ovs_header *ovs_header = info->userhdr;
|
struct ovs_header *ovs_header = genl_info_userhdr(info);
|
||||||
struct sk_buff *reply;
|
struct sk_buff *reply;
|
||||||
struct vport *vport;
|
struct vport *vport;
|
||||||
int err;
|
int err;
|
||||||
|
@ -211,7 +211,7 @@ ovs_meter_cmd_reply_start(struct genl_info *info, u8 cmd,
|
|||||||
struct ovs_header **ovs_reply_header)
|
struct ovs_header **ovs_reply_header)
|
||||||
{
|
{
|
||||||
struct sk_buff *skb;
|
struct sk_buff *skb;
|
||||||
struct ovs_header *ovs_header = info->userhdr;
|
struct ovs_header *ovs_header = genl_info_userhdr(info);
|
||||||
|
|
||||||
skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
|
skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
|
||||||
if (!skb)
|
if (!skb)
|
||||||
@ -272,7 +272,7 @@ error:
|
|||||||
|
|
||||||
static int ovs_meter_cmd_features(struct sk_buff *skb, struct genl_info *info)
|
static int ovs_meter_cmd_features(struct sk_buff *skb, struct genl_info *info)
|
||||||
{
|
{
|
||||||
struct ovs_header *ovs_header = info->userhdr;
|
struct ovs_header *ovs_header = genl_info_userhdr(info);
|
||||||
struct ovs_header *ovs_reply_header;
|
struct ovs_header *ovs_reply_header;
|
||||||
struct nlattr *nla, *band_nla;
|
struct nlattr *nla, *band_nla;
|
||||||
struct sk_buff *reply;
|
struct sk_buff *reply;
|
||||||
@ -409,7 +409,7 @@ static int ovs_meter_cmd_set(struct sk_buff *skb, struct genl_info *info)
|
|||||||
struct dp_meter *meter, *old_meter;
|
struct dp_meter *meter, *old_meter;
|
||||||
struct sk_buff *reply;
|
struct sk_buff *reply;
|
||||||
struct ovs_header *ovs_reply_header;
|
struct ovs_header *ovs_reply_header;
|
||||||
struct ovs_header *ovs_header = info->userhdr;
|
struct ovs_header *ovs_header = genl_info_userhdr(info);
|
||||||
struct dp_meter_table *meter_tbl;
|
struct dp_meter_table *meter_tbl;
|
||||||
struct datapath *dp;
|
struct datapath *dp;
|
||||||
int err;
|
int err;
|
||||||
@ -482,7 +482,7 @@ exit_free_meter:
|
|||||||
|
|
||||||
static int ovs_meter_cmd_get(struct sk_buff *skb, struct genl_info *info)
|
static int ovs_meter_cmd_get(struct sk_buff *skb, struct genl_info *info)
|
||||||
{
|
{
|
||||||
struct ovs_header *ovs_header = info->userhdr;
|
struct ovs_header *ovs_header = genl_info_userhdr(info);
|
||||||
struct ovs_header *ovs_reply_header;
|
struct ovs_header *ovs_reply_header;
|
||||||
struct nlattr **a = info->attrs;
|
struct nlattr **a = info->attrs;
|
||||||
struct dp_meter *meter;
|
struct dp_meter *meter;
|
||||||
@ -535,7 +535,7 @@ exit_unlock:
|
|||||||
|
|
||||||
static int ovs_meter_cmd_del(struct sk_buff *skb, struct genl_info *info)
|
static int ovs_meter_cmd_del(struct sk_buff *skb, struct genl_info *info)
|
||||||
{
|
{
|
||||||
struct ovs_header *ovs_header = info->userhdr;
|
struct ovs_header *ovs_header = genl_info_userhdr(info);
|
||||||
struct ovs_header *ovs_reply_header;
|
struct ovs_header *ovs_reply_header;
|
||||||
struct nlattr **a = info->attrs;
|
struct nlattr **a = info->attrs;
|
||||||
struct dp_meter *old_meter;
|
struct dp_meter *old_meter;
|
||||||
|
@ -1294,7 +1294,7 @@ static int tipc_nl_compat_recv(struct sk_buff *skb, struct genl_info *info)
|
|||||||
struct tipc_nl_compat_msg msg;
|
struct tipc_nl_compat_msg msg;
|
||||||
struct nlmsghdr *req_nlh;
|
struct nlmsghdr *req_nlh;
|
||||||
struct nlmsghdr *rep_nlh;
|
struct nlmsghdr *rep_nlh;
|
||||||
struct tipc_genlmsghdr *req_userhdr = info->userhdr;
|
struct tipc_genlmsghdr *req_userhdr = genl_info_userhdr(info);
|
||||||
|
|
||||||
memset(&msg, 0, sizeof(msg));
|
memset(&msg, 0, sizeof(msg));
|
||||||
|
|
||||||
|
Loading…
Reference in New Issue
Block a user