samples/bpf: Fix spelling typos in samples/bpf

do_hbm_test.sh:
The comment incorrectly used "upcomming" instead of "upcoming".

hbm.c
The comment incorrectly used "Managment" instead of "Management".
The comment incorrectly used "Currrently" instead of "Currently".

tcp_cong_kern.c
The comment incorrectly used "deteremined" instead of "determined".

tracex1.bpf.c
The comment incorrectly used "loobpack" instead of "loopback".

Signed-off-by: Chu Guangqing <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Alexei Starovoitov <[email protected]>

Author: Chu Guangqing

samples/bpf/do_hbm_test.sh

@@ -112,7 +112,7 @@ function start_hbm () {
 processArgs () {
   for i in $args ; do
     case $i in
-    # Support for upcomming ingress rate limiting
+    # Support for upcoming ingress rate limiting
     #in)         # support for upcoming ingress rate limiting
     #  dir="-i"
     #  dir_name="in"

samples/bpf/hbm.c

@@ -5,7 +5,7 @@
  * modify it under the terms of version 2 of the GNU General Public
  * License as published by the Free Software Foundation.
  *
- * Example program for Host Bandwidth Managment
+ * Example program for Host Bandwidth Management
  *
  * This program loads a cgroup skb BPF program to enforce cgroup output
  * (egress) or input (ingress) bandwidth limits.
@@ -24,7 +24,7 @@
  *		beyond the rate limit specified while there is available
  *		bandwidth. Current implementation assumes there is only
  *		NIC (eth0), but can be extended to support multiple NICs.
- *		Currrently only supported for egress.
+ *		Currently only supported for egress.
  *    -h	Print this info
  *    prog	BPF program file name. Name defaults to hbm_out_kern.o
  */

samples/bpf/tcp_cong_kern.c

@@ -5,7 +5,7 @@
  * License as published by the Free Software Foundation.
  *
  * BPF program to set congestion control to dctcp when both hosts are
- * in the same datacenter (as deteremined by IPv6 prefix).
+ * in the same datacenter (as determined by IPv6 prefix).
  *
  * Use "bpftool cgroup attach $cg sock_ops $prog" to load this BPF program.
  */

samples/bpf/tracex1.bpf.c

@@ -20,7 +20,7 @@ SEC("kprobe.multi/__netif_receive_skb_core*")
 int bpf_prog1(struct pt_regs *ctx)
 {
 	/* attaches to kprobe __netif_receive_skb_core,
-	 * looks for packets on loobpack device and prints them
+	 * looks for packets on loopback device and prints them
 	 * (wildcard is used for avoiding symbol mismatch due to optimization)
 	 */
 	char devname[IFNAMSIZ];