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Date: Fri, 19 Jan 2018 12:51:22 -0800
From: David Ahern <dsahern@...il.com>
To: Jiri Pirko <jiri@...nulli.us>, netdev@...r.kernel.org
Cc: davem@...emloft.net, jhs@...atatu.com, xiyou.wangcong@...il.com,
mlxsw@...lanox.com, andrew@...n.ch,
vivien.didelot@...oirfairelinux.com, f.fainelli@...il.com,
michael.chan@...adcom.com, ganeshgr@...lsio.com,
saeedm@...lanox.com, matanb@...lanox.com, leonro@...lanox.com,
idosch@...lanox.com, jakub.kicinski@...ronome.com,
simon.horman@...ronome.com, pieter.jansenvanvuuren@...ronome.com,
john.hurley@...ronome.com, alexander.h.duyck@...el.com,
ogerlitz@...lanox.com, john.fastabend@...il.com,
daniel@...earbox.net
Subject: Re: [patch iproute2 net-next v11 3/4] tc: introduce support for
block-handle for filter operations
On 1/17/18 2:48 AM, Jiri Pirko wrote:
> @@ -89,7 +93,21 @@ static int tc_filter_modify(int cmd, unsigned int flags, int argc, char **argv,
> NEXT_ARG();
> if (d[0])
> duparg("dev", *argv);
> + if (block_index) {
> + fprintf(stderr, "Error: \"dev\" cannot be used in the same time as \"block\"\n");
'in the same time' does not sound right. something like: 'dev and block
are mutually exlusive'
> + return -1;
> + }
> strncpy(d, *argv, sizeof(d)-1);
> + } else if (matches(*argv, "block") == 0) {
> + NEXT_ARG();
> + if (block_index)
> + duparg("block", *argv);
> + if (d[0]) {
> + fprintf(stderr, "Error: \"block\" cannot be used in the same time as \"dev\"\n");
same here. Correct the ones below as well.
> + return -1;
> + }
> + if (get_u32(&block_index, *argv, 0) || !block_index)
> + invarg("invalid block index value", *argv);
> } else if (strcmp(*argv, "root") == 0) {
> if (req->t.tcm_parent) {
> fprintf(stderr,
> @@ -184,6 +202,9 @@ static int tc_filter_modify(int cmd, unsigned int flags, int argc, char **argv,
> fprintf(stderr, "Cannot find device \"%s\"\n", d);
> return 1;
> }
> + } else if (block_index) {
> + req->t.tcm_ifindex = TCM_IFINDEX_MAGIC_BLOCK;
> + req->t.tcm_block_index = block_index;
> }
>
> if (q) {
> @@ -228,6 +249,7 @@ static __u32 filter_prio;
> static __u32 filter_protocol;
> static __u32 filter_chain_index;
> static int filter_chain_index_set;
> +static __u32 filter_block_index;
> __u16 f_proto;
>
> int print_filter(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
> @@ -274,20 +296,27 @@ int print_filter(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
> print_bool(PRINT_ANY, "added", "added ", true);
>
> print_string(PRINT_FP, NULL, "filter ", NULL);
> - if (!filter_ifindex || filter_ifindex != t->tcm_ifindex)
> - print_string(PRINT_ANY, "dev", "dev %s ",
> - ll_index_to_name(t->tcm_ifindex));
> -
> - if (!filter_parent || filter_parent != t->tcm_parent) {
> - if (t->tcm_parent == TC_H_ROOT)
> - print_bool(PRINT_ANY, "root", "root ", true);
> - else if (t->tcm_parent == TC_H_MAKE(TC_H_CLSACT, TC_H_MIN_INGRESS))
> - print_bool(PRINT_ANY, "ingress", "ingress ", true);
> - else if (t->tcm_parent == TC_H_MAKE(TC_H_CLSACT, TC_H_MIN_EGRESS))
> - print_bool(PRINT_ANY, "egress", "egress ", true);
> - else {
> - print_tc_classid(abuf, sizeof(abuf), t->tcm_parent);
> - print_string(PRINT_ANY, "parent", "parent %s ", abuf);
> + if (t->tcm_ifindex == TCM_IFINDEX_MAGIC_BLOCK) {
> + if (!filter_block_index ||
> + filter_block_index != t->tcm_block_index)
> + print_uint(PRINT_ANY, "block", "block %u ",
> + t->tcm_block_index);
> + } else {
> + if (!filter_ifindex || filter_ifindex != t->tcm_ifindex)
> + print_string(PRINT_ANY, "dev", "dev %s ",
> + ll_index_to_name(t->tcm_ifindex));
> +
> + if (!filter_parent || filter_parent != t->tcm_parent) {
> + if (t->tcm_parent == TC_H_ROOT)
> + print_bool(PRINT_ANY, "root", "root ", true);
> + else if (t->tcm_parent == TC_H_MAKE(TC_H_CLSACT, TC_H_MIN_INGRESS))
> + print_bool(PRINT_ANY, "ingress", "ingress ", true);
> + else if (t->tcm_parent == TC_H_MAKE(TC_H_CLSACT, TC_H_MIN_EGRESS))
> + print_bool(PRINT_ANY, "egress", "egress ", true);
> + else {
> + print_tc_classid(abuf, sizeof(abuf), t->tcm_parent);
> + print_string(PRINT_ANY, "parent", "parent %s ", abuf);
> + }
> }
> }
>
> @@ -367,6 +396,7 @@ static int tc_filter_get(int cmd, unsigned int flags, int argc, char **argv)
> int protocol_set = 0;
> __u32 chain_index;
> int chain_index_set = 0;
> + __u32 block_index = 0;
> __u32 parent_handle = 0;
> char *fhandle = NULL;
> char d[IFNAMSIZ] = {};
> @@ -377,7 +407,21 @@ static int tc_filter_get(int cmd, unsigned int flags, int argc, char **argv)
> NEXT_ARG();
> if (d[0])
> duparg("dev", *argv);
> + if (block_index) {
> + fprintf(stderr, "Error: \"dev\" cannot be used in the same time as \"block\"\n");
> + return -1;
> + }
> strncpy(d, *argv, sizeof(d)-1);
> + } else if (matches(*argv, "block") == 0) {
> + NEXT_ARG();
> + if (block_index)
> + duparg("block", *argv);
> + if (d[0]) {
> + fprintf(stderr, "Error: \"block\" cannot be used in the same time as \"dev\"\n");
> + return -1;
> + }
> + if (get_u32(&block_index, *argv, 0) || !block_index)
> + invarg("invalid block index value", *argv);
> } else if (strcmp(*argv, "root") == 0) {
> if (req.t.tcm_parent) {
> fprintf(stderr,
> @@ -491,8 +535,12 @@ static int tc_filter_get(int cmd, unsigned int flags, int argc, char **argv)
> return 1;
> }
> filter_ifindex = req.t.tcm_ifindex;
> + } else if (block_index) {
> + req.t.tcm_ifindex = TCM_IFINDEX_MAGIC_BLOCK;
> + req.t.tcm_block_index = block_index;
> + filter_block_index = block_index;
> } else {
> - fprintf(stderr, "Must specify netdevice \"dev\"\n");
> + fprintf(stderr, "Must specify netdevice \"dev\" or block index \"block\"\n");
> return -1;
> }
>
> @@ -542,6 +590,7 @@ static int tc_filter_list(int argc, char **argv)
> __u32 prio = 0;
> __u32 protocol = 0;
> __u32 chain_index;
> + __u32 block_index = 0;
> char *fhandle = NULL;
>
> while (argc > 0) {
> @@ -549,7 +598,21 @@ static int tc_filter_list(int argc, char **argv)
> NEXT_ARG();
> if (d[0])
> duparg("dev", *argv);
> + if (block_index) {
> + fprintf(stderr, "Error: \"dev\" cannot be used in the same time as \"block\"\n");
> + return -1;
> + }
> strncpy(d, *argv, sizeof(d)-1);
> + } else if (matches(*argv, "block") == 0) {
> + NEXT_ARG();
> + if (block_index)
> + duparg("block", *argv);
> + if (d[0]) {
> + fprintf(stderr, "Error: \"block\" cannot be used in the same time as \"dev\"\n");
> + return -1;
> + }
> + if (get_u32(&block_index, *argv, 0) || !block_index)
> + invarg("invalid block index value", *argv);
> } else if (strcmp(*argv, "root") == 0) {
> if (req.t.tcm_parent) {
> fprintf(stderr,
> @@ -638,6 +701,14 @@ static int tc_filter_list(int argc, char **argv)
> return 1;
> }
> filter_ifindex = req.t.tcm_ifindex;
> + } else if (block_index) {
> + if (!tc_qdisc_block_exists(block_index)) {
> + fprintf(stderr, "Cannot find block \"%u\"\n", block_index);
> + return 1;
> + }
> + req.t.tcm_ifindex = TCM_IFINDEX_MAGIC_BLOCK;
> + req.t.tcm_block_index = block_index;
> + filter_block_index = block_index;
> }
>
> if (filter_chain_index_set)
>
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