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genetlink: support split policies in ctrl_dumppolicy_put_op()
Pass do and dump versions of the op to ctrl_dumppolicy_put_op() so that it can provide a different policy index for the two. Since we now look at policies, and those are set appropriately there's no need to look at the GENL_DONT_VALIDATE_DUMP flag. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -1345,7 +1345,8 @@ static void *ctrl_dumppolicy_prep(struct sk_buff *skb,
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static int ctrl_dumppolicy_put_op(struct sk_buff *skb,
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struct netlink_callback *cb,
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struct genl_ops *op)
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struct genl_split_ops *doit,
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struct genl_split_ops *dumpit)
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{
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struct ctrl_dump_policy_ctx *ctx = (void *)cb->ctx;
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struct nlattr *nest_pol, *nest_op;
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@ -1353,10 +1354,7 @@ static int ctrl_dumppolicy_put_op(struct sk_buff *skb,
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int idx;
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/* skip if we have nothing to show */
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if (!op->policy)
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return 0;
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if (!op->doit &&
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(!op->dumpit || op->validate & GENL_DONT_VALIDATE_DUMP))
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if (!doit->policy && !dumpit->policy)
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return 0;
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hdr = ctrl_dumppolicy_prep(skb, cb);
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@ -1367,21 +1365,26 @@ static int ctrl_dumppolicy_put_op(struct sk_buff *skb,
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if (!nest_pol)
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goto err;
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nest_op = nla_nest_start(skb, op->cmd);
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nest_op = nla_nest_start(skb, doit->cmd);
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if (!nest_op)
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goto err;
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/* for now both do/dump are always the same */
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idx = netlink_policy_dump_get_policy_idx(ctx->state,
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op->policy,
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op->maxattr);
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if (doit->policy) {
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idx = netlink_policy_dump_get_policy_idx(ctx->state,
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doit->policy,
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doit->maxattr);
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if (op->doit && nla_put_u32(skb, CTRL_ATTR_POLICY_DO, idx))
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goto err;
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if (nla_put_u32(skb, CTRL_ATTR_POLICY_DO, idx))
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goto err;
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}
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if (dumpit->policy) {
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idx = netlink_policy_dump_get_policy_idx(ctx->state,
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dumpit->policy,
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dumpit->maxattr);
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if (op->dumpit && !(op->validate & GENL_DONT_VALIDATE_DUMP) &&
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nla_put_u32(skb, CTRL_ATTR_POLICY_DUMP, idx))
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goto err;
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if (nla_put_u32(skb, CTRL_ATTR_POLICY_DUMP, idx))
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goto err;
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}
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nla_nest_end(skb, nest_op);
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nla_nest_end(skb, nest_pol);
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@ -1399,16 +1402,19 @@ static int ctrl_dumppolicy(struct sk_buff *skb, struct netlink_callback *cb)
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void *hdr;
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if (!ctx->policies) {
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struct genl_split_ops doit, dumpit;
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struct genl_ops op;
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if (ctx->single_op) {
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int err;
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if (genl_get_cmd_split(ctx->op, GENL_CMD_CAP_DO,
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ctx->rt, &doit) &&
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genl_get_cmd_split(ctx->op, GENL_CMD_CAP_DUMP,
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ctx->rt, &dumpit)) {
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WARN_ON(1);
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return -ENOENT;
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}
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err = genl_get_cmd(ctx->op, ctx->rt, &op);
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if (WARN_ON(err))
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return err;
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if (ctrl_dumppolicy_put_op(skb, cb, &op))
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if (ctrl_dumppolicy_put_op(skb, cb, &doit, &dumpit))
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return skb->len;
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/* don't enter the loop below */
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@ -1418,7 +1424,12 @@ static int ctrl_dumppolicy(struct sk_buff *skb, struct netlink_callback *cb)
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while (ctx->opidx < genl_get_cmd_cnt(ctx->rt)) {
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genl_get_cmd_by_index(ctx->opidx, ctx->rt, &op);
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if (ctrl_dumppolicy_put_op(skb, cb, &op))
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genl_cmd_full_to_split(&doit, ctx->rt,
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&op, GENL_CMD_CAP_DO);
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genl_cmd_full_to_split(&dumpit, ctx->rt,
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&op, GENL_CMD_CAP_DUMP);
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if (ctrl_dumppolicy_put_op(skb, cb, &doit, &dumpit))
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return skb->len;
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ctx->opidx++;
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