aya-bpf: Fix XDP Map documentation

Signed-off-by: Dave Tucker <dave@dtucker.co.uk>

bpf/aya-bpf/src/maps/xdp/cpu_map.rs

@@ -25,9 +25,9 @@ use crate::{
 /// static MAP: CpuMap = CpuMap::with_max_entries(8, 0);
 ///
 /// #[xdp]
-/// fn xdp(_ctx: XdpContext) -> i32 {
+/// fn xdp(_ctx: XdpContext) -> u32 {
 ///     // Redirect to CPU 7 or drop packet if no entry found.
-///     MAP.redirect(7, xdp_action::XDP_DROP as u64)
+///     MAP.redirect(7, xdp_action::XDP_DROP as u64).unwrap_or(xdp_action::XDP_DROP)
 /// }
 /// ```
 #[repr(transparent)]

bpf/aya-bpf/src/maps/xdp/dev_map.rs

@@ -27,8 +27,8 @@ use crate::{
 /// static MAP: DevMap = DevMap::with_max_entries(1, 0);
 ///
 /// #[xdp]
-/// fn xdp(_ctx: XdpContext) -> i32 {
+/// fn xdp(_ctx: XdpContext) -> u32 {
-///     MAP.redirect(0, xdp_action::XDP_PASS as u64)
+///     MAP.redirect(0, xdp_action::XDP_PASS as u64).unwrap_or(xdp_action::XDP_DROP)
 /// }
 /// ```
 #[repr(transparent)]
@@ -100,7 +100,7 @@ impl DevMap {
     /// #[map]
     /// static MAP: DevMap = DevMap::with_max_entries(1, 0);
     ///
-    /// let target_if_index = MAP.get(0).target_if_index;
+    /// let target_if_index = MAP.get(0).unwrap().if_index;
     ///
     /// // redirect to if_index
     /// ```

bpf/aya-bpf/src/maps/xdp/dev_map_hash.rs

@@ -29,8 +29,8 @@ use crate::{
 /// static MAP: DevMapHash = DevMapHash::with_max_entries(1, 0);
 ///
 /// #[xdp]
-/// fn xdp(_ctx: XdpContext) -> i32 {
+/// fn xdp(_ctx: XdpContext) -> u32 {
-///     MAP.redirect(42, xdp_action::XDP_PASS as u64)
+///     MAP.redirect(42, xdp_action::XDP_PASS as u64).unwrap_or(xdp_action::XDP_DROP)
 /// }
 /// ```
 #[repr(transparent)]
@@ -102,7 +102,7 @@ impl DevMapHash {
     /// #[map]
     /// static MAP: DevMapHash = DevMapHash::with_max_entries(1, 0);
     ///
-    /// let target_if_index = MAP.get(42).target_if_index;
+    /// let target_if_index = MAP.get(42).unwrap().if_index;
     ///
     /// // redirect to ifindex
     /// ```

bpf/aya-bpf/src/maps/xdp/xsk_map.rs

@@ -28,9 +28,9 @@ use crate::{
 /// static SOCKS: XskMap = XskMap::with_max_entries(8, 0);
 ///
 /// #[xdp]
-/// fn xdp(ctx, XdpContext) -> i32 {
+/// fn xdp(ctx: XdpContext) -> u32 {
 ///     let queue_id = unsafe { (*ctx.ctx).rx_queue_index };
-///     MAP.redirect(queue_id, xdp_action::XDP_DROP as u64)
+///     SOCKS.redirect(queue_id, xdp_action::XDP_DROP as u64).unwrap_or(xdp_action::XDP_DROP)
 /// }
 /// ```
 ///
@@ -68,7 +68,7 @@ impl XskMap {
     /// use aya_bpf::{macros::map, maps::XskMap};
     ///
     /// #[map]
-    /// static SOCKS: XskMap::with_max_entries(8, 0);
+    /// static SOCKS: XskMap =  XskMap::with_max_entries(8, 0);
     /// ```
     pub const fn with_max_entries(max_entries: u32, flags: u32) -> XskMap {
         XskMap {
@@ -93,7 +93,7 @@ impl XskMap {
     /// use aya_bpf::{macros::map, maps::XskMap};
     ///
     /// #[map]
-    /// static SOCKS: XskMap::pinned(8, 0);
+    /// static SOCKS: XskMap = XskMap::pinned(8, 0);
     /// ```
     pub const fn pinned(max_entries: u32, flags: u32) -> XskMap {
         XskMap {
@@ -151,9 +151,9 @@ impl XskMap {
     /// static SOCKS: XskMap = XskMap::with_max_entries(8, 0);
     ///
     /// #[xdp]
-    /// fn xdp(ctx, XdpContext) -> u32 {
+    /// fn xdp(ctx: XdpContext) -> u32 {
     ///     let queue_id = unsafe { (*ctx.ctx).rx_queue_index };
-    ///     MAP.redirect(queue_id, 0).unwrap_or(xdp_action::XDP_DROP)
+    ///     SOCKS.redirect(queue_id, 0).unwrap_or(xdp_action::XDP_DROP)
     /// }
     /// ```
     #[inline(always)]