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Date: Fri, 27 Aug 2021 10:10:18 -0700
From: David Ahern <dsahern@...il.com>
To: Nikolay Aleksandrov <razor@...ckwall.org>, netdev@...r.kernel.org
Cc: roopa@...dia.com, Joachim Wiberg <troglobit@...il.com>,
Nikolay Aleksandrov <nikolay@...dia.com>
Subject: Re: [PATCH iproute2-next 02/17] bridge: vlan: add support to show
global vlan options
On 8/26/21 6:05 AM, Nikolay Aleksandrov wrote:
> From: Nikolay Aleksandrov <nikolay@...dia.com>
>
> Add support for new bridge vlan command grouping called global which
> operates on global options. The first command it supports is "show".
> Man page and help are also updated with the new command.
>
> Syntax is: $ bridge vlan global show [ vid VID ] [ dev DEV ]
>
> Signed-off-by: Nikolay Aleksandrov <nikolay@...dia.com>
> ---
> bridge/br_common.h | 3 +-
> bridge/monitor.c | 2 +-
> bridge/vlan.c | 229 ++++++++++++++++++++++++++++++++++-----------
> man/man8/bridge.8 | 21 +++++
> 4 files changed, 200 insertions(+), 55 deletions(-)
>
> diff --git a/bridge/br_common.h b/bridge/br_common.h
> index b9adafd98dea..09f42c814918 100644
> --- a/bridge/br_common.h
> +++ b/bridge/br_common.h
> @@ -12,7 +12,8 @@ int print_mdb_mon(struct nlmsghdr *n, void *arg);
> int print_fdb(struct nlmsghdr *n, void *arg);
> void print_stp_state(__u8 state);
> int parse_stp_state(const char *arg);
> -int print_vlan_rtm(struct nlmsghdr *n, void *arg, bool monitor);
> +int print_vlan_rtm(struct nlmsghdr *n, void *arg, bool monitor,
> + bool global_only);
>
> int do_fdb(int argc, char **argv);
> int do_mdb(int argc, char **argv);
> diff --git a/bridge/monitor.c b/bridge/monitor.c
> index 88f52f52f084..845e221abb49 100644
> --- a/bridge/monitor.c
> +++ b/bridge/monitor.c
> @@ -71,7 +71,7 @@ static int accept_msg(struct rtnl_ctrl_data *ctrl,
> case RTM_DELVLAN:
> if (prefix_banner)
> fprintf(fp, "[VLAN]");
> - return print_vlan_rtm(n, arg, true);
> + return print_vlan_rtm(n, arg, true, false);
>
> default:
> return 0;
> diff --git a/bridge/vlan.c b/bridge/vlan.c
> index 9b6511f189ff..9e33995f8f33 100644
> --- a/bridge/vlan.c
> +++ b/bridge/vlan.c
> @@ -36,7 +36,8 @@ static void usage(void)
> " [ self ] [ master ]\n"
> " bridge vlan { set } vid VLAN_ID dev DEV [ state STP_STATE ]\n"
> " bridge vlan { show } [ dev DEV ] [ vid VLAN_ID ]\n"
> - " bridge vlan { tunnelshow } [ dev DEV ] [ vid VLAN_ID ]\n");
> + " bridge vlan { tunnelshow } [ dev DEV ] [ vid VLAN_ID ]\n"
> + " bridge vlan global { show } [ dev DEV ] [ vid VLAN_ID ]\n");
> exit(-1);
> }
>
> @@ -621,11 +622,89 @@ static int print_vlan_stats(struct nlmsghdr *n, void *arg)
> return 0;
> }
>
> -int print_vlan_rtm(struct nlmsghdr *n, void *arg, bool monitor)
> +static void print_vlan_global_opts(struct rtattr *a)
> +{
> + struct rtattr *vtb[BRIDGE_VLANDB_GOPTS_MAX + 1];
> + __u16 vid, vrange = 0;
> +
> + if ((a->rta_type & NLA_TYPE_MASK) != BRIDGE_VLANDB_GLOBAL_OPTIONS)
> + return;
> +
> + parse_rtattr_flags(vtb, BRIDGE_VLANDB_GOPTS_MAX, RTA_DATA(a),
> + RTA_PAYLOAD(a), NLA_F_NESTED);
> + vid = rta_getattr_u16(vtb[BRIDGE_VLANDB_GOPTS_ID]);
> + if (vtb[BRIDGE_VLANDB_GOPTS_RANGE])
> + vrange = rta_getattr_u16(vtb[BRIDGE_VLANDB_GOPTS_RANGE]);
> + else
> + vrange = vid;
> + print_range("vlan", vid, vrange);
> + print_nl();
> +}
> +
> +static void print_vlan_opts(struct rtattr *a)
> +{
> + struct rtattr *vtb[BRIDGE_VLANDB_ENTRY_MAX + 1];
> + struct bridge_vlan_xstats vstats;
> + struct bridge_vlan_info *vinfo;
> + __u16 vrange = 0;
> + __u8 state = 0;
> +
> + if ((a->rta_type & NLA_TYPE_MASK) != BRIDGE_VLANDB_ENTRY)
> + return;
> +
> + parse_rtattr_flags(vtb, BRIDGE_VLANDB_ENTRY_MAX, RTA_DATA(a),
> + RTA_PAYLOAD(a), NLA_F_NESTED);
> + vinfo = RTA_DATA(vtb[BRIDGE_VLANDB_ENTRY_INFO]);
> +
> + memset(&vstats, 0, sizeof(vstats));
> + if (vtb[BRIDGE_VLANDB_ENTRY_RANGE])
> + vrange = rta_getattr_u16(vtb[BRIDGE_VLANDB_ENTRY_RANGE]);
> + else
> + vrange = vinfo->vid;
> +
> + if (vtb[BRIDGE_VLANDB_ENTRY_STATE])
> + state = rta_getattr_u8(vtb[BRIDGE_VLANDB_ENTRY_STATE]);
> +
> + if (vtb[BRIDGE_VLANDB_ENTRY_STATS]) {
> + struct rtattr *stb[BRIDGE_VLANDB_STATS_MAX+1];
> + struct rtattr *attr;
> +
> + attr = vtb[BRIDGE_VLANDB_ENTRY_STATS];
> + parse_rtattr(stb, BRIDGE_VLANDB_STATS_MAX, RTA_DATA(attr),
> + RTA_PAYLOAD(attr));
> +
> + if (stb[BRIDGE_VLANDB_STATS_RX_BYTES]) {
> + attr = stb[BRIDGE_VLANDB_STATS_RX_BYTES];
> + vstats.rx_bytes = rta_getattr_u64(attr);
> + }
> + if (stb[BRIDGE_VLANDB_STATS_RX_PACKETS]) {
> + attr = stb[BRIDGE_VLANDB_STATS_RX_PACKETS];
> + vstats.rx_packets = rta_getattr_u64(attr);
> + }
> + if (stb[BRIDGE_VLANDB_STATS_TX_PACKETS]) {
> + attr = stb[BRIDGE_VLANDB_STATS_TX_PACKETS];
> + vstats.tx_packets = rta_getattr_u64(attr);
> + }
> + if (stb[BRIDGE_VLANDB_STATS_TX_BYTES]) {
> + attr = stb[BRIDGE_VLANDB_STATS_TX_BYTES];
> + vstats.tx_bytes = rta_getattr_u64(attr);
> + }
> + }
> + print_range("vlan", vinfo->vid, vrange);
> + print_vlan_flags(vinfo->flags);
> + print_nl();
> + print_string(PRINT_FP, NULL, "%-" __stringify(IFNAMSIZ) "s ", "");
> + print_stp_state(state);
> + print_nl();
> + if (show_stats)
> + __print_one_vlan_stats(&vstats);
> +}
> +
> +int print_vlan_rtm(struct nlmsghdr *n, void *arg, bool monitor, bool global_only)
> {
> - struct rtattr *vtb[BRIDGE_VLANDB_ENTRY_MAX + 1], *a;
> struct br_vlan_msg *bvm = NLMSG_DATA(n);
> int len = n->nlmsg_len;
> + struct rtattr *a;
> int rem;
>
> if (n->nlmsg_type != RTM_NEWVLAN && n->nlmsg_type != RTM_DELVLAN &&
> @@ -660,49 +739,13 @@ int print_vlan_rtm(struct nlmsghdr *n, void *arg, bool monitor)
>
> rem = len;
> for (a = BRVLAN_RTA(bvm); RTA_OK(a, rem); a = RTA_NEXT(a, rem)) {
> - struct bridge_vlan_xstats vstats;
> - struct bridge_vlan_info *vinfo;
> - __u32 vrange = 0;
> - __u8 state = 0;
> -
> - parse_rtattr_flags(vtb, BRIDGE_VLANDB_ENTRY_MAX, RTA_DATA(a),
> - RTA_PAYLOAD(a), NLA_F_NESTED);
> - vinfo = RTA_DATA(vtb[BRIDGE_VLANDB_ENTRY_INFO]);
> -
> - memset(&vstats, 0, sizeof(vstats));
> - if (vtb[BRIDGE_VLANDB_ENTRY_RANGE])
> - vrange = rta_getattr_u16(vtb[BRIDGE_VLANDB_ENTRY_RANGE]);
> - else
> - vrange = vinfo->vid;
> -
> - if (vtb[BRIDGE_VLANDB_ENTRY_STATE])
> - state = rta_getattr_u8(vtb[BRIDGE_VLANDB_ENTRY_STATE]);
> + unsigned short rta_type = a->rta_type & NLA_TYPE_MASK;
>
> - if (vtb[BRIDGE_VLANDB_ENTRY_STATS]) {
> - struct rtattr *stb[BRIDGE_VLANDB_STATS_MAX+1];
> - struct rtattr *attr;
> -
> - attr = vtb[BRIDGE_VLANDB_ENTRY_STATS];
> - parse_rtattr(stb, BRIDGE_VLANDB_STATS_MAX, RTA_DATA(attr),
> - RTA_PAYLOAD(attr));
> + /* skip unknown attributes */
> + if (rta_type > BRIDGE_VLANDB_MAX ||
> + (global_only && rta_type != BRIDGE_VLANDB_GLOBAL_OPTIONS))
> + continue;
>
> - if (stb[BRIDGE_VLANDB_STATS_RX_BYTES]) {
> - attr = stb[BRIDGE_VLANDB_STATS_RX_BYTES];
> - vstats.rx_bytes = rta_getattr_u64(attr);
> - }
> - if (stb[BRIDGE_VLANDB_STATS_RX_PACKETS]) {
> - attr = stb[BRIDGE_VLANDB_STATS_RX_PACKETS];
> - vstats.rx_packets = rta_getattr_u64(attr);
> - }
> - if (stb[BRIDGE_VLANDB_STATS_TX_PACKETS]) {
> - attr = stb[BRIDGE_VLANDB_STATS_TX_PACKETS];
> - vstats.tx_packets = rta_getattr_u64(attr);
> - }
> - if (stb[BRIDGE_VLANDB_STATS_TX_BYTES]) {
> - attr = stb[BRIDGE_VLANDB_STATS_TX_BYTES];
> - vstats.tx_bytes = rta_getattr_u64(attr);
> - }
> - }
> if (vlan_rtm_cur_ifidx != bvm->ifindex) {
> open_vlan_port(bvm->ifindex, VLAN_SHOW_VLAN);
> open_json_object(NULL);
Split the refactoring of this code into a separate patch that only does
the refactoring.
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